Browse Finding Aids by Date
1901-1925
A
- A. Hildebrandt papers, 1826-1943.
- A.A. Brill papers, 1888-1994.
- Aaron Copland collection, 1841-1991.
- Aaron Schoen World War I map collection.
- A.B. (Alfred Bult) Mullett archive.
- A.B. MacDonald papers, 1878-1976.
- A.B. Mullett & Co. architectural drawing archive.
- A.B. Mullett & Co. archive.
- A.B. Mullett & Co. Mullett & Co. architectural drawing archive (Library of Congress).
- Abbe, Cleveland, 1838-1916. Cleveland Abbe papers, 1850-1954.
- Abbe, Cleveland, Jr., 1872-1934. Cleveland Abbe Jr. papers.
- Abbott Lawrence Rotch papers 1896-1912.
- Abel Doysié papers, 1910-1967.
- Abraham Flexner papers, 1865-1989.
- Abraham, Karl, 1877-1925. Karl Abraham papers, 1908-1925.
- Abraham Lincoln papers, 1774-1948.
- Abram P.T. Elder papers, 1890-1916.
- Acheson, Edward Goodrich, 1856-1931. Edward Goodrich Acheson papers, 1872-1968.
- Adams, Leason Heberling, 1887-1969. Leason Heberling Adams papers, 1919-1968.
- Adee, Alvey A. (Alvey Augustus), 1842-1924. Alvey A. Adee papers.
- Adee, Augustus Alvey, 1802-1844. Augustus Alvey Adee papers.
- Adee, David Graham, 1837-1901. David Graham Adee papers.
- Adee family. Adee family papers, 1824-1966.
- Adee family papers, 1824-1966.
- Adelaide Johnson papers, 1873-1947.
- Adelaide Rosalia Hasse papers, 1862-1951.
- Adolph Bolm collection, 1895-1982.
- Adolph Caspar Miller papers, 1913-1947.
- Adolph Law Voge papers, 1915-1939.
- A.E. Housman papers, 1906-1940.
- Aero Club of America. Aero Club of America scrapbooks, 1891-1912.
- Aero Club of America records.
- Aero Club of America scrapbooks, 1891-1912.
- L'Aerophile collection, 1876-1949.
- Agnes Elizabeth Ernst Meyer papers, 1853-2010.
- A.K. Fisher papers, 1827-1957.
- Albert Einstein papers, 1916-1953.
- Albert Gleaves papers, 1803-1946.
- Albert J. Beveridge papers, 1788-1943.
- Albert Payson Terhune papers, 1890-1957.
- Albert Sidney Burleson papers, 1845-1943.
- Alberto Nepomuceno collection, 1887-1988.
- Alcides Arguedas diaries, 1900-1943.
- Alcides Arguedas papers.
- Aldrich, Abby Pearce Chapman, 1845-1917. Abby Pearce Chapman Aldrich diaries. 1904-1912.
- Aldrich family. John Aldrich Stephenson collection of the Hand, Fiske, and Aldrich families papers. 1745-1966.
- Aldrich family papers.
- Aldrich, Morton Arnold, 1874-1956. Morton Arnold Aldrich papers.
- Aldrich, Nelson W. (Nelson Wilmarth), 1841-1915. Nelson W. Aldrich papers, 1777-1930.
- Aldrich, Thomas Bailey, 1836-1907. Thomas Bailey Aldrich papers, 1873-1901.
- Aldrich, Zoë Worthington Fiske, 1864-1942. Zoë Worthington Fiske Aldrich papers.
- Alessandro Liberati collection.
- Alexander Black MacDonald papers.
- Alexander Freud and Sophie Schreiber Freud papers, 1872-1965.
- Alexander Graham Bell family papers, 1834-1974.
- Alexander Jeffrey McKelway papers, 1814-1942.
- Alexandra Danilova collection, 1920-2000.
- Alexis Vasilevich Babine papers, 1895-1953.
- Alfred Easton Poor papers, 1866-1985.
- Alfred Edward Housman papers.
- Alice Eversman and Elena De Sayn collection.
- Alice Eversman and Elena de Sayn papers, 1862-1970s.
- Alice Koenigsberger collection.
- Alice Kortschak Koenigsberger and Hugo Kortschak papers, 1913-1941.
- Alice Rohe papers, 1914-1919.
- Alice Roosevelt Longworth papers, 1888-1942.
- Allen, Charles Julius, 1840-1915. Charles Julius Allen papers.
- Allen family papers.
- Allen, Florence Ellinwood, 1884-1966. Florence Ellinwood Allen papers, 1907-1965.
- Allen, Grace Elizabeth, 1886-1976. Grace Elizabeth Allen papers.
- Allen, Henry Justin, 1868-1950. Henry Justin Allen papers, 1896-1942.
- Allen, Henry T. (Henry Tureman), 1859-1930. Henry T. Allen papers, 1806-1933.
- Allesandro and Speranza Liberati papers, 1880-1947.
- Allison, Mary Ireland, -1870. Mary Ireland Allison diary. 1868-1869.
- Allison, William Henry, 1870-1941. William Henry Allison diaries, 1868-1940.
- Alma Gluck scrapbooks and other materials, 1902-1940.
- Alton B. Parker papers, 1878-1937.
- Ambler, Barbara Hayes, 1926-2006. Barbara Hayes Ambler papers.
- Ameen Fares Rihani papers, 1897-1940.
- American / Century Play Company scripts and business papers, 1894-2006.
- American Colonization Society. American Colonization Society records, 1792-1964.
- American Colonization Society records, 1792-1964.
- American Colony in Jerusalem collection, circa 1786-2007.
- American Colony (Jerusalem). American Colony in Jerusalem collection, circa 1786-2007.
- American Council of Learned Societies. American Council of Learned Societies records, 1910-2019.
- American Council of Learned Societies records, 1910-2019.
- American Federation of Labor. American Federation of Labor records, 1883-1925.
- American Federation of Labor records, 1883-1925.
- American Gold Star Mothers, Inc. American Gold Star Mothers, Inc., records, 1917-1941.
- American Gold Star Mothers, Inc., records, 1917-1941.
- American Historical Association. American Historical Association records, 1884-1986.
- American Historical Association records, 1884-1986.
- American Institute of Aeronautics and Astronautics. Institute of the Aerospace Sciences archives, 1783-1962.
- American Play Company. American / Century Play Company scripts and business papers, 1894-2006.
- American Society for Colonizing the Free People of Colour of the United States. American Society for Colonizing the Free People of Colour of the United States records.
- Amory Austin collection relating to heraldry, 1865-1917.
- Amos Pinchot papers, 1856-1945.
- Andersen, Hendrik Christian, 1872-1940. Hendrik Christian Andersen papers, 1844-1940.
- Andersen, Olivia Cushing, 1871- Olivia Cushing Andersen papers. 1882-1929.
- Anderson, Chandler P. (Chandler Parsons), 1866-1936. Chandler P. Anderson papers, 1894-1953.
- Anderson, Frank Maloy, 1871-1961. Frank Maloy Anderson papers, 1895-1961.
- Anderson, Maxwell, 1888-1959. Maxwell Anderson papers, 1920-1989.
- Andre Kostelanetz collection, 1922-1984.
- Andrew Carnegie papers, 1803-1935.
- Andrew Gbur collection, 1916-1992.
- Andrews, Edgar D., 1890-1974. Edgar D. Andrews collection 1917-1974.
- Angelo Patri papers, 1904-1962.
- Anita Newcomb McGee papers, 1688-1932.
- Ann Tanneyhill papers, 1879-2012.
- Anna E. Dickinson papers, 1859-1951.
- Anna Jean Snowden papers, 1910-1949.
- Anne Hull collection, 1905-1980.
- Anne Hull papers, 1894-1981.
- Anne Locke Bixby Chamberlin family papers, 1793-1924.
- Anne Locke Bixby Chamberlin papers.
- Anne Montgomerie Traubel papers.
- Anson Burlingame and Edward L. Burlingame family papers, 1810-1922.
- Antheil, George, 1900-1959. George and Böske Antheil papers, circa 1875-1984.
- Antheil, George, 1900-1959. George Antheil correspondence to Stanley Hart, 1919-1931.
- Antheil, George, 1900-1959. George Antheil correspondence with Mary Louise Curtis Bok, 1921-1940.
- Anthony League of the District of Columbia. Anthony League of the District of Columbia records.
- Anthony, Mary S. Mary S. Anthony papers.
- Anthony, Susan B. (Susan Brownell), 1820-1906. Susan B. Anthony papers, 1846-1934.
- Anti-Imperialist League (Washington, D.C.). Anti-Imperialist League (Washington, D.C.) records. 1899-1908.
- Anton Gloetzner music manuscripts, 1870-1920.
- Antonín Novotný papers, 1848-1966.
- A.P. Schmidt Company. A.P. Schmidt Company archives, 1869-1958.
- A.P. Schmidt Company archives, 1869-1958.
- Appleton, Nathan, 1843-1906. Nathan Appleton papers, 1850-1904.
- Appling, Austin M. (Austin Maurice), 1794- Austin M. Appling account ledgers. 1832-1862.
- Archer, Gleason L., 1880-1966. Gleason L. Archer papers.
- Argenteau family. Mercy-Argenteau family papers, 1410-1921.
- Argenteau family papers.
- Arguedas, Alcides, 1879-1946. Alcides Arguedas diaries, 1900-1943.
- Armand Hammer papers, circa 1508-1989.
- Armes, Ethel, 1876-1945. Ethel Armes collection of Lee family papers, 1671-1936.
- Armstrong, Robert Burns, 1903-1955. Robert Burns Armstrong papers.
- Arne Oldberg collection, circa 1887-1962.
- Arnold Gesell papers, 1870-1971.
- Arnold Schoenberg correspondence and other papers, 1894-1959.
- Arthur B. Heaton architectural drawing archive.
- Arthur B. Heaton archive.
- Arthur B. Spingarn papers, 1850-1968.
- Arthur, Chester Alan, II, 1864-1937. Chester Alan Arthur II papers. 1874-1937.
- Arthur, Chester Alan, III, 1901-1972. Chester Alan Arthur III papers. 1853-1972.
- Arthur D. Little, Inc. Arthur D. Little, Inc., records.
- Arthur D. Little papers, 1884-1973.
- Arthur family. Arthur family papers, 1817-1972.
- Arthur family papers, 1817-1972.
- Arthur Foote music manuscripts 1888-1919.
- Arthur Gleason papers, 1863-1931.
- Arthur J. Morris papers, 1888-1976.
- Arthur Sweetser papers, 1913-1961.
- Arthur Woods papers, 1884-1938.
- Artur Schnabel collection, 1899-1950.
- Artur Schnabel - Mary Virginia Foreman LeGarrec collection, 1893-1996.
- Asaph Hall papers, 1837-1998.
- Associated Press news dispatches, 1915-1930.
- Associated Press. Washington Bureau. Associated Press news dispatches, 1915-1930.
- Association Against the Prohibition Amendment. Association Against the Prohibition Amendment records, 1917-1933.
- Association Against the Prohibition Amendment records, 1917-1933.
- Association for National Service. Association for National Service records.
- A.T. Mahan papers, 1779-1970.
- Augustus S. Nicholson papers, 1861-1934.
- Austin, Amory. Amory Austin collection relating to heraldry, 1865-1917.
- Austrian, Geoffrey. Geoffrey Austrian papers.
- A.W. Greely papers, 1753-1997.
- Ayestarán, Lauro. Lauro Ayestarán collection, 1830-1966.
- Ayres, Leonard Porter, 1879-1946. Leonard Porter Ayres papers, 1902-1946.
B
- Babine, Alexis Vasilevich, 1866-1930. Alexis Vasilevich Babine papers, 1895-1953.
- Bailey, Leo Joseph, 1894-1988 Leo Joseph Bailey collection 1917-2008.
- Bain, Frank Frank Bain papers.
- Bain, Mildred Mildred Bain papers.
- Bainbridge Colby papers, 1863-1950.
- Baker, Annabelle Annabelle Baker papers.
- Baker, Newton Diehl, 1871-1937. Newton Diehl Baker papers, 1896-1962.
- Baker, Ray Stannard, 1870-1946. Ray Stannard Baker papers, 1836-1947.
- Baldorioty de Castro, Román, 1822-1889. Román Baldorioty de Castro papers.
- Baldwin, Evelyn Briggs, 1862-1933. Evelyn Briggs Baldwin papers, 1649-1933.
- Baldwin, Hanson Weightman, 1903-1991. Hanson Weightman Baldwin papers, 1920-1978.
- Ballets russes. Serge Grigoriev / Ballets Russes archive. 1909-2009.
- Bangs, George H. George H. Bangs papers.
- Barbee, David Rankin, 1874-1958. James Dodson and David Rankin Barbee papers. 1784-1953.
- Barbee, James Dodson, 1832-1904. James Dodson Barbee and David Rankin Barbee papers, 1784-1953.
- Barnard, Leon F., 1877-1917. Leon F. Barnard papers, 1901-circa 1993.
- Barr, Cyrilla. Cyrilla Barr research materials on Elizabeth Sprague Coolidge, 1864-2000.
- Barrett, John, 1866-1938. John Barrett papers, 1861-1943.
- Barrus, Clara, 1864-1931. Clara Barrus and John Burroughs papers. 1877-1981.
- Bartlett, Ethel, 1896-1978. Ethel Bartlett and Rae Robertson music and other papers, 1914-1970.
- Bartlett, Paul Wayland, 1865-1925. Paul Wayland Bartlett papers, 1875-1959.
- Bartlett, Suzanne Earle Ogden-Jones Emmons, 1861-1954. Suzanne Earle Ogden-Jones Emmons Bartlett papers. 1897-1913.
- Bartlett, Truman Howe, 1835-1923. Truman Howe Bartlett papers. 1881-1922.
- Bartók, Béla, 1881-1945. Etelka Freund collection on Béla Bartók, 1903-1971.
- Bartók-Freund collection, 1904-1970.
- Barton, Clara, 1821-1912. Clara Barton papers, 1805-1963.
- Bassett, John Spencer, 1867-1928. John Spencer Bassett papers, 1770-1978.
- Bassow, Whitman. Whitman Bassow papers, 1920-1990.
- Batchelder, John Davis, 1872-1958. John Davis Batchelder collection of manuscripts, 1537-1944.
- Batchelder, John Davis, 1872-1958. John Davis Batchelder ephemera and special collections, 2200 BCE-1948.
- Batchelder, John Davis, 1872-1958. John Davis Batchelder papers. 1910-1944.
- Bates, David Homer, 1843-1926. David Homer Bates papers, 1837-1926.
- Bateson, Gregory, 1904-1980. Gregory Bateson papers.
- Bauer, Harold, 1873-1951. Harold Bauer collection, 1886-1951.
- Beach, Joseph Warren, 1880-1957. Concept of nature in nineteenth-century English poetry. 1936.
- Beach, Joseph Warren, 1880-1957. Joseph Warren Beach papers, 1891-1955.
- Beach, Joseph Warren, 1880-1957. Making of the Auden canon. 1957.
- Beale, Edward Fitzgerald, 1822-1893. Edward Fitzgerald Beale papers.
- Beale family. Beale family papers from the Decatur House, 1794-1957.
- Beale family papers from the Decatur House, 1794-1957.
- Beale, Marie Oge, 1880-1956. Marie Oge Beale diaries.
- Beale, Truxton, 1856-1936. Truxton Beale papers.
- Beard, Daniel Carter, 1850-1941. Daniel Carter Beard papers, 1798-1941.
- Beard, Daniel Carter, 1850-1941. Visual materials from the Daniel Carter Beard papers.
- Becker, Florence Deakins, 1878-1969. Florence Deakins Becker papers, 1891-1963.
- Becker, George F. (George Ferdinand), 1847-1919. George F. Becker papers, 1814-1928.
- Beckley, Alfred, 1802-1888. Alfred Beckley papers.
- Beckley family. John James Beckley family papers, 1789-1918.
- Beckley, John James, 1757-1807. John James Beckley family papers, 1789-1918.
- Beerits, Henry C. Henry C. Beerits papers.
- Bela Lyon Pratt papers, 1884-1918.
- Belgian children's letters to President Woodrow Wilson, 1915.
- Belknap, George E. (George Eugene), 1832-1903. George E. Belknap papers, 1857-1903.
- Belknap, Reginald Rowan, 1871-1959. Reginald Rowan Belknap papers, 1784-1929.
- Bell, Alexander Graham, 1847-1922. Alexander Graham Bell family papers, 1834-1974.
- Bell, Alexander Melville, 1819-1905. Alexander Melville Bell papers.
- Bell family. Alexander Graham Bell family papers, 1834-1974.
- Bell, Mabel Gardiner Hubbard, 1857-1923. Mabel Gardiner Hubbard Bell papers.
- Belle Brown collection, 1865-1912.
- Belle Roosevelt papers.
- Belmont, Alva, 1853-1933. Alva Belmont scrapbook collection.
- Belmont-Paul Women's Equality National Monument. Belmont-Paul Women's Equality National Monument records.
- Belo, Jane, 1904-1968. Jane Belo papers.
- Ben B. Lindsey papers, 1838-1957.
- Bendire, Charles, 1836-1897. Charles Bendire papers, 1874-1919.
- Benedict, Ruth, 1887-1948. Ruth Benedict papers.
- Benjamin C. Gruenberg and Sidonie Matsner Gruenberg papers, 1878-1972.
- Benjamin C. Gruenberg papers.
- Benjamin Clarke Marsh papers, 1910-1950.
- Benjamin Delahauf Foulois papers, 1898-1966.
- Benjamin, Harold Raymond Wayne, 1893-1969. Harold Raymond Wayne Benjamin papers, 1908-1972.
- Benjamin Harrison papers, 1780-1948.
- Benjamin, Herbert, 1900-1983. Herbert Benjamin papers, 1915-2004.
- Benjamin Holt Ticknor papers, 1595-1935.
- Benjamin K. Edwards collection.
- Benjamin S. Custer papers, 1912-2000.
- Benjamin T. Montgomery family papers, 1872-1987.
- Benjamin V. Cohen papers, 1902-1983.
- Bennett, Frank M. (Frank Marion), 1857-1924. Frank M. Bennett papers, 1893-1909.
- Benney, William A. William A. Benney papers, 1920-1966.
- Benson, William Shepherd, 1855-1932. William Shepherd Benson papers, circa 1791-1952.
- Berge, George W., 1864-1925. George W. Berge business records. 1907.
- Berge, Wendell, 1903-1955. Wendell Berge papers, 1907-1950.
- Berlepsch, Hans Hermann Carl Ludwig, Graf von, 1850-1915. Hans Hermann Carl Ludwig, Graf von Berlepsch, correspondence, 1874-1913.
- Berlin, Irving, 1888-1989. Irving Berlin collection, 1895-1990.
- Berliner, Emile, 1851-1929. Emile Berliner collection, 1871-1965.
- Bernadotte Everly Schmitt papers, 1868-1970.
- Bernays, Edward L., 1891-1995. Edward L. Bernays papers, 1777-1994.
- Berryman, Clifford Kennedy, 1869-1949. Clifford Kennedy Berryman papers, 1814-1965.
- Bertha W. Edwards collection on Hiram Simmons, 1907-1980.
- Bertrand N.O. Walker papers, 1899-1921.
- Bess Furman papers, 1728-1967.
- Betances, Ramón Emeterio, 1827-1898. Ramón Emeterio Betances correspondence.
- Beveridge, Albert J. (Albert Jeremiah), 1862-1927. Albert J. Beveridge papers, 1788-1943.
- Bickerdyke, Mary Ann, 1817-1901. Mary Ann Bickerdyke papers, 1847-1905.
- Biddle, George, 1885-1973. George Biddle papers, 1863-1973.
- Bigelow, John, 1817-1911. John Bigelow abstract of diary. 1886-1911.
- Bigelow, John, 1854-1936. John Bigelow papers, 1492-1936.
- Billings, Warren K., 1893-1972. Warren K. Billings papers, 1899-1973.
- Billy Sunday papers.
- Bingham, Theo. A. (Theodore Alfred), 1858-1934. Theo. A. Bingham papers, 1897-1903.
- Blackwell family papers.
- Blackwell family. Visual materials from the Blackwell family papers.
- Blandy, William H. P. (William Henry Purnell), 1890-1954. William H.P. Blandy papers, 1913-1977.
- Blatch, Harriot Stanton, 1856-1940. Harriot Stanton Blatch papers, 1907-1915.
- Bledsoe, Albert Taylor, 1809-1877. Albert Taylor Bledsoe papers.
- Bliss, Tasker Howard, 1853-1930. Tasker Howard Bliss collection of World War I maps and related materials.
- Bliss, Tasker Howard, 1853-1930. Tasker Howard Bliss papers, 1864-1933.
- Bloch collection, 1888-1981.
- Bloch, Ernest, 1880-1959. Eric Johnson collection of Ernest Bloch photographs. 1896-2008.
- Bloch, Ernest, 1880-1959. Ernest Bloch collection, 1888-1981.
- Block, Ralph, 1889-1974. Ralph Block papers, 1872-1971.
- Boardman, Mabel Thorp, 1860-1946. Mabel Thorp Boardman papers, 1853-1945.
- Boas, Franz, 1858-1942. Franz Boas papers, 1878-1943.
- Boas, Franziska, 1902-1988. Franziska Boas collection, 1920-1988.
- Bob Fosse and Gwen Verdon collection, 1920-1991.
- Boggs, Samuel Whittemore, 1889-1954. Samuel Whittemore Boggs papers, 1912-1954.
- Boissevain, Eugen, 1880-1949. Eugen Boissevain papers.
- Bok, Edward William, 1863-1930. Edward William Bok papers, 1880-1926.
- Bolm, Adolph, 1884-1951. Adolph Bolm collection, 1895-1982.
- Bonaparte, Charles J. (Charles Joseph), 1851-1921. Charles J. Bonaparte papers, 1760-1921.
- Bonaparte, Marie, Princess, 1882-1962. Princess Marie Bonaparte papers, 1889-1962.
- Bonsal, Stephen, 1865-1951. Stephen Bonsal papers, 1890-1973.
- Bonynge, Robert W. (Robert William), 1863-1939. Robert W. Bonynge papers, 1881-1939.
- Booker T. Washington papers, 1853-1946.
- Boone, Blind, 1864-1927. John William "Blind" Boone music, ca. 1907-1918.
- Boone, Joel Thompson, 1889-1974. Joel Thompson Boone papers, 1755-1971.
- Borah, William Edgar, 1865-1940. William Edgar Borah papers, 1905-1940.
- Borglum, Gutzon, 1867-1941. Gutzon Borglum papers, 1881-2019.
- Borglum, Lincoln, 1912-1986. Lincoln Borglum papers.
- Borglum, Mary Montgomery, 1874-1955. Mary Montgomery Borglum papers.
- Borglum, Solon Hannibal, 1868-1922. Solon Hannibal Borglum papers, 1886-1969.
- Boris Brasol papers, 1919-1954.
- Bowker, R. R. (Richard Rogers), 1848-1933. R.R. Bowker papers, 1831-1931.
- Bowles, Edward Lindley, 1897-1990. Edward Lindley Bowles papers, 1869-1990.
- Brand Whitlock papers, 1890-1934.
- Brasol, Boris, 1885-1963. Boris Brasol papers, 1919-1954.
- Brayer, Herbert Oliver. Western range cattle and other industries study papers, 1823-1947.
- Breckinridge, Clifton Rodes, 1846-1932. Clifton Rodes Breckinridge papers.
- Breckinridge, Desha, 1867-1935. Desha Breckinridge papers.
- Breckinridge family. Breckinridge family papers, 1752-1980.
- Breckinridge family papers, 1752-1965.
- Breckinridge, Henry, 1886-1960. Henry Breckinridge papers.
- Breckinridge, Isabella Goodrich, 1874-1961. Isabella Goodrich Breckinridge papers.
- Breckinridge, John, 1760-1806. John Breckinridge papers.
- Breckinridge, John C. (John Cabell), 1821-1875. John C. Breckinridge papers.
- Breckinridge, Joseph Cabell, 1842-1920. Joseph Cabell Breckinridge papers.
- Breckinridge, Katherine Carson. Katherine Carson Breckinridge papers.
- Breckinridge Long papers, 1486-1948.
- Breckinridge, Madeline McDowell, 1872-1920. Madeline McDowell Breckinridge papers.
- Breckinridge, Robert J. (Robert Jefferson), 1800-1871. Robert J. Breckinridge papers.
- Breckinridge, Sophonisba P. (Sophonisba Preston), 1866-1948.. Sophonisba Preston Breckinridge papers.
- Breckinridge, William Campbell Preston, 1837-1904. William Campbell Preston Breckinridge papers.
- Brent, Charles Henry, 1862-1929. Charles Henry Brent papers, 1860-1991.
- Brett Riggs influenza pandemic archive, 1891-1945.
- Breuer, Josef, 1842-1925. Josef Breuer papers, 1859-1970.
- Brill, A. A. (Abraham Arden), 1874-1948. A.A. Brill papers, 1888-1994.
- Brill, Kittie Rose. Kittie Rose Brill papers.
- Bristol, Helen Moore. Helen Moore Bristol papers.
- Bristol, Mark L. (Mark Lambert), 1868-1939. Mark L. Bristol papers, 1882-1939.
- Bronislava Nijinska collection, circa 1740-1996.
- Bronson M. Cutting papers, 1890-1950.
- Brooks, Charlotte, 1918-1998. Charlotte Brooks papers. 1831-1999.
- Brooks family. Kendrick-Brooks family papers, 1831-2000.
- Brown, Belle. Belle Brown collection, 1865-1912.
- Brown, Orie O. Orie O. Brown papers. 1891-1893.
- Brown, Ray Eber, 1892-1962. Ray Eber Brown papers, 1915-1962.
- Browne, Charles Albert, 1870-1947. Charles Albert Browne papers, 1783-1947.
- Brownson, Willard H. (Willard Herbert), 1845-1935. Willard H. Brownson papers, 1859-1932.
- Bruce, Eugene S. (Eugene Sewell), 1860-1920. Eugene S. Bruce papers.
- Bruce Rogers materials, 1200-1957.
- Brundage, Percival Flack, 1892-1979. Percival Flack Brundage papers, 1918-1979.
- Bryan, William Jennings, 1860-1925. William Jennings Bryan papers, 1877-1940.
- Bryson B. Rash papers, 1918-1992.
- Bryson, Lyman, 1888-1959. Lyman Bryson papers, 1893-1978.
- Buchman, Frank, 1878-1961. Frank Buchman papers. 1873-1966.
- Buck, Dudley, 1839-1909. Dudley Buck papers, 1861-1939.
- Bucke, Richard Maurice, 1837-1902. Richard Maurice Bucke papers.
- Buell, Raymond Leslie, 1896-1946. Raymond Leslie Buell papers, 1915-1981.
- Building and Grounds Division series, Library of Congress archives, 1871-1954.
- Bullard, Robert Lee, 1861-1947. Robert Lee Bullard papers, 1881-1955.
- Bunau-Varilla, Philippe, 1859-1940. Philippe Bunau-Varilla papers, 1877-1955.
- Burbank family. Burbank-Van Voorhis families papers, 1814-1913.
- Burbank family papers.
- Burbank, Luther, 1849-1926. Luther Burbank papers, 1830-1989.
- Burbank, Sidney, 1807-1882. Sidney Burbank diaries. 1839-1880.
- Burbank, Sullivan, 1776-1862. Sullivan Burbank diary. 1814-1823.
- Burbank-Van Voorhis families papers, 1814-1913.
- Burleson, Albert Sidney, 1863-1937. Albert Sidney Burleson papers, 1845-1943.
- Burlingame, Anson, 1820-1870. Anson Burlingame and Edward L. Burlingame family papers, 1810-1922.
- Burlingame, Edward L. (Edward Livermore), 1848-1922. Anson Burlingame and Edward L. Burlingame family papers. 1810-1922.
- Burlingame family. Anson Burlingame and Edward L. Burlingame family papers, 1810-1922.
- Burlingame family papers.
- Burlingame, Jane Cornelia Livermore, 1825-1888. Jane Cornelia Livermore Burlingame papers.
- Burnett, Edmund Cody, 1864-1949. Edmund Cody Burnett papers, 1765-1967.
- Burnett, Frances Hawks Cameron. Frances Hawks Cameron Burnett papers, 1818-1936.
- Burroughs, John, 1837-1921. Clara Barrus and John Burroughs papers. 1877-1981.
- Burt, Andrew Gano, 1810-1875. Andrew Gano Burt diary and correspondence. 1851.
- Burt, Andrew Sheridan, 1839-1915. Andrew Sheridan Burt papers. 1864-1880.
- Burt, Elizabeth, 1839-1926. Elizabeth Burt papers, 1797-1917.
- Burton Egbert Stevenson papers, 1900-1951.
- Burton Kline papers, 1896-1954.
- Burton Norvell Harrison family papers, 1812-1926.
- Busby, William L., -1919 William L. Busby papers.
- Butterfield, Kenyon L. (Kenyon Leech), 1868-1935. Kenyon L. Butterfield papers, 1889-1970.
- Butterworth, Jack L. Jack Butterworth collection of silent film cues, 1917-1929.
- B.W. Huebsch papers, 1893-1964.
C
- C. Chaillé-Long papers, 1809-1918.
- C. Hart Merriam papers, 1864-1938.
- Caleb Henry Carlton papers, 1831-1954.
- Callan, John Lansing, 1886-1958. John Lansing Callan papers, 1907-1956.
- Calvin Coolidge papers, 1915-1932.
- Cameron family. Miles-Cameron families correspondence, 1661-1956.
- Cameron family papers.
- Campbell, Charles Francis Faulkner, 1876- Charles Francis Faulkner Campbell papers.
- Campbell family. Campbell-Preston-Floyd families papers, 1741-1931.
- Campbell family papers.
- Campbell, Francis Joseph, Sir, 1834-1914. Sir Francis Joseph Campbell papers, 1870-1935.
- Campbell, George A. (George Ashley), 1870-1954. George A. Campbell papers.
- Campbell-Preston-Floyd families papers, 1741-1931.
- Campbell, Sophia Faulkner. Sophia Faulkner Campbell papers.
- Canal Zone Library-Museum. Canal Zone Library-Museum Panama Collection, 1804-1977.
- Canal Zone Library-Museum Panama Collection, 1804-1977.
- Capek, Thomas, 1861-1950. Thomas Capek collection of materials relating to Czechoslovakia and Czech Americans, 1619-1953.
- Caperton, William Banks, 1855-1941. William Banks Caperton papers, 1873-1939.
- Cardozo family. Francis Lewis Cardozo family papers, 1864-1968.
- Cardozo, Francis Lewis, 1836-1903. Francis Lewis Cardozo family papers, 1864-1968.
- Carl Brent Swisher collection of research material relating to Roger Brooke Taney, 1836-1962.
- Carl Brent Swisher papers.
- Carl Conrad Loth papers, 1896-1967.
- Carl Koller papers, 1866-1988.
- Carl Schurz papers, 1837-1983.
- Carl Schurz Vrooman papers, 1872-1975.
- Carlisle, Horace Callaway, 1871-1957. Horace Callaway Carlisle poems, 1900-1956.
- Carlton, Caleb Henry, 1836-1923. Caleb Henry Carlton papers, 1831-1954.
- Carman, Ezra Ayers, 1834-1909. Ezra Ayers Carman papers, 1861-1909.
- Carnegie, Andrew, 1835-1919. Andrew Carnegie papers, 1803-1935.
- Carnegie Endowment for International Peace, Mexican Revolution newspaper clippings archive. 1911-1913.
- Carpenter collection, 1891-1961.
- Carpenter, Frances, 1890-1972. Frances Carpenter collection relating to Frank G. Carpenter, 1875-1960.
- Carpenter, Frank G. (Frank George), 1855-1924. Frances Carpenter collection relating to Frank G. Carpenter, 1875-1960.
- Carpenter, Fred W., 1873 or 1874-1957 Fred W. Carpenter papers.
- Carpenter, John Alden, 1876-1951. John Alden Carpenter collection, 1891-1961.
- Carr, Wilbur J. (Wilbur John), 1870-1942. Wilbur J. Carr papers, 1892-1942.
- Carrère, John Merven, 1858-1911. John Merven Carrère papers, 1894-1911.
- Carrie Chapman Catt papers, 1848-1950.
- Carrie Fulton Phillips papers.
- Carrie Jacobs-Bond collection, circa 1896-circa 1944.
- Carroll, Raymond G., 1876?-1943. Raymond G. Carroll papers, 1905-1944.
- Carter Godwin Woodson papers, 1736-1974.
- Carter, Isabel Gordon, 1897- Isabel Gordon Carter collection, 1921-1942.
- Carter, Lucy Grymes Lee, 1786-1860. Lucy Grymes Lee Carter papers.
- Carter, Thomas Henry, 1854-1911. Thomas Henry Carter papers, 1883-1917.
- Carter, W. Beverly (William Beverly), 1921-1982. W. Beverly Carter papers, 1924-1997.
- Casey, Silas, 1841-1913. Silas Casey papers, 1771-1941.
- Cass Gilbert papers, 1841-1961.
- Castelnuovo-Tedesco, Mario, 1895-1968. Mario Castelnuovo-Tedesco papers, 1822-1998.
- Castle family. Henry Northrup Castle family papers, 1394-1920.
- Castle family papers.
- Catt, Carrie Chapman, 1859-1947. Carrie Chapman Catt papers, 1848-1950.
- Cattell, James McKeen, 1860-1944. James McKeen Cattell papers, 1835-1948.
- Cerise C. Jack papers relating to the Sacco and Vanzetti case, circa 1921-1999.
- Cesi Kellinger collection of dance materials, 1842-1994.
- Cesi Kellinger dance collection.
- Chaillé-Long, C. (Charles), 1842-1917. C. Chaillé-Long papers, 1809-1918.
- Chamberlain, Eugene Tyler, 1856-1929. Eugene Tyler Chamberlain collection relating to French orphans of World War I, 1916-1927.
- Chamberlain, Joshua Lawrence, 1828-1914. Joshua Lawrence Chamberlain papers, 1775-1913.
- Chamberlin, Anne Locke Bixby, 1874-1967. Anne Locke Bixby Chamberlin family papers, 1793-1924.
- Chambers, Washington Irving, 1856-1934. Washington Irving Chambers papers, 1871-1943.
- Chancellor, William Estabrook, 1867-1963. Warren Gamaliel Harding: president of the United States; a review of facts collected from anthropological, historical, and political researches. 1922.
- Chancey, Odrey Verne Walker, 1889-1971. Odrey Verne Walker Chancey autobiography.
- Chandler P. Anderson papers, 1894-1953.
- Chandler, William E. (William Eaton), 1835-1917. William E. Chandler papers, 1863-1917.
- Chanute, Octave, 1832-1910. Octave Chanute papers, 1807-1955.
- Charles Albert Browne papers, 1783-1947.
- Charles B. Elliott papers, 1910-1912.
- Charles Bendire papers, 1874-1919.
- Charles Bowdoin Fillebrown papers, 1879-1928.
- Charles Burke Elliott papers.
- Charles Chaillé-Long papers.
- Charles E. Feinberg collection.
- Charles E. Goad fire insurance map collection, 1894-1909.
- Charles Edmund Worth collection, 1917-1919.
- Charles Edward Russell papers, 1864-1941.
- Charles Evans Hughes papers, 1836-1950.
- Charles Follen McKim papers, 1838-1929.
- Charles Hambitzer music manuscripts, circa 1910-1918.
- Charles Henry Brent papers, 1860-1991.
- Charles Henry Fromuth papers, 1884-1937.
- Charles Henry Webb papers, 1859-1924.
- Charles J. Bonaparte papers, 1760-1921.
- Charles Julius Allen and Grace Elizabeth Allen papers, 1865-1976.
- Charles Julius Allen papers.
- Charles Linza McNary papers, 1921-1944.
- Charles Maass papers, 1912-1924.
- Charles Mason Remey family papers, 1778-1949.
- Charles Miller collection of music manuscripts, 1924-1945.
- Charles Monroe Dickinson papers, 1897-1923.
- Charles Moore papers, 1848-1944.
- Charles N. Elliot collection, 1873-1951.
- Charles N. Elliot papers.
- Charles O'Neil papers, 1833-1927.
- Charles Oscar Maas map collection, 1920-1997.
- Charles P. Taft papers, 1816-1983.
- Charles Pelot Summerall map collection.
- Charles Pelot Summerall papers, 1880-1955.
- Charles Perley Smith papers, 1920-1946.
- Charles Russell Train papers, 1898-1967.
- Charles S. Hamlin papers, 1869-1968.
- Charles S. Sperry papers, 1862-1912.
- Charles Tournemire collection, circa 1868-1962.
- Charles W. Hack papers, circa 1800-1926.
- Charles W. Sirch papers, 1878-1935.
- Charles Warren papers, 1874-1954.
- Charles Withers papers, 1917-1942.
- Charlotte Everett Hopkins collection of National Civic Federation. Woman's Department. District of Columbia Section records, 1900-1926.
- Charlotte Everett Hopkins papers.
- Chase, Emma Lester, 1885- Emma Lester Chase papers.
- Chase, Lewis Nathaniel, 1873-1937. Lewis Nathaniel Chase papers, 1836-1947.
- Chase, Pearl-Adell, 1872-1955. Pearl-Adell Chase papers.
- Chauncy, Elnathan, 1724-1796. Elnathan Chauncy sermons.
- Cheney, John Vance, 1848-1922. John Vance Cheney papers, 1847-1927.
- Chester, Colby Mitchell, 1844-1932. Colby Mitchell Chester papers, 1913-1928.
- Child, Warren G. (Warren Gerald), 1883-1938. Warren G. Child papers, 1907-1942.
- Chittick, Elizabeth, 1908-2009. Elizabeth Chittick papers.
- Choate, Joseph Hodges, 1832-1917. Joseph Hodges Choate papers, 1745-1929.
- Christian A. Fleetwood papers, 1797-1945.
- Christian Abraham Fleetwood papers.
- Christiancy and Pickett families papers, 1835-1998.
- Christiancy family. Christiancy and Pickett families papers, 1835-1998.
- Christiancy family papers.
- Christiancy, Henry Clay, 1841-1925. Henry Clay Christiancy papers.
- Christiancy, James Isaac, 1843-1899. James Isaac Christiancy papers.
- Christopher Dodrill collection on John Philip Sousa, 1876-1992.
- Christopher Dodrill - John Philip Sousa papers, 1876-1992.
- Chronicles of America photoplays papers, 1920s.
- Chronicles of America Picture Corporation Chronicles of America photoplays papers, 1920s.
- Clapp, Asa, 1762-1848. Asa Clapp papers.
- Clapp, Asa W. H. (Asa William Henry), 1805-1891. Asa William Henry Clapp papers.
- Clapp, Charles Q., 1799-1868. Charles Q. Clapp papers.
- Clapp family. Clapp family papers, 1789-1935.
- Clapp family papers, 1789-1935.
- Clapp, Mary Jane Emerson, 1835-1922. Mary Jane Emerson Clapp papers.
- Clapper, Raymond, 1892-1944. Raymond Clapper papers, 1908-1962.
- Clara Barrus and John Burroughs papers, 1877-1981.
- Clara Barrus papers.
- Clara Barton papers, 1805-1963.
- Clarence Darrow papers, 1894-1941.
- Clarence Edward Mulford papers, 1921-1936.
- Clark, John T., 1883-1949. John T. Clark papers. 1921-1923.
- Clark, Victor S. (Victor Selden), 1868-1946. Victor S. Clark papers, 1827-1944.
- Clarke-Smith, Linda. Rebekah Crawford and Linda Clarke-Smith papers. 1715-1929.
- Cleland, T. M. (Thomas Maitland), 1880-1964. T.M. Cleland papers, 1880-1964.
- Cleveland Abbe papers, 1850-1954.
- Cleveland, Frances Folsom, 1864-1947. Frances Folsom Cleveland papers.
- Cleveland, Grover, 1837-1908. Grover Cleveland papers, 1743-1945.
- Clifford Kennedy Berryman papers, 1814-1965.
- Clyde Wilbur Russell collection, 1917-1919.
- Cobb, Edith, 1895-1977. Edith Cobb papers.
- Coblentz, William W. (William Weber), 1873-1962. William W. Coblentz papers, 1883-1960.
- Coggeshall, Joseph. Joseph Coggeshall account book. 1771-1786.
- Cohen, Benjamin V. Benjamin V. Cohen papers, 1902-1983.
- Colbert, John W. (John William), 1880-1965. John W. Colbert papers, 1895-1966.
- Colby, Bainbridge, 1869-1950. Bainbridge Colby papers, 1863-1950.
- Colby Mitchell Chester papers, 1913-1928.
- Collins, Ross A. (Ross Alexander), 1880-1968. Ross A. Collins papers, 1906-1967.
- Colson, Lewis Whitfield, 1880-1961. Lewis Whitfield Colson papers, 1894-1950.
- Comer, Lucretia Garfield, 1894-1968. Lucretia Garfield Comer papers.
- Conger, Edwin H. (Edwin Hurd), 1843-1907. Edwin H. Conger papers.
- Congressional Union for Woman Suffrage (U.S.). Congressional Union for Woman Suffrage records.
- Connelly family. Ham, Connelly, Parks, and Snodgrass families papers, 1870-2018.
- Connelly family papers.
- Connor, Jeannette Thurber, 1872-1927. Jeannette Thurber Connor collection of Floridiana, 1570-1927.
- Consultants and Fellows series, Library of Congress archives, 1917-1973.
- Cook, Frederick Albert, 1865-1940. Frederick Albert Cook papers, 1881-1977.
- Coolidge, Calvin, 1872-1933. Calvin Coolidge papers, 1915-1932.
- Coolidge, Elizabeth Sprague, 1864-1953. Elizabeth Sprague Coolidge Foundation collection, 1894-1953.
- Coolidge family. Coolidge-Pollard families papers, 1818-2015.
- Coolidge family papers.
- Coolidge-Pollard families papers, 1818-2015.
- Cooper Curtice papers, 1822-1953.
- Cooper, Hewitt & Company (Ringwood, N.J.). Cooper, Hewitt & Company (Ringwood, N.J.) records, 1833-1908.
- Cooper, Hewitt & Company (Ringwood, N.J.) records, 1833-1908.
- Cooperative Recreation Service collection.
- Copeland railroad survey collection.
- Copher, Edith Hulsizer, 1891-1935. Edith Hulsizer Copher papers.
- Copland, Aaron, 1900-1990. Aaron Copland collection, 1841-1991.
- Copland collection, 1841-1991.
- Corbin, Hannah Lee, 1728-1782. Hannah Lee Corbin papers.
- Corbin, Henry Clark, 1842-1909. Henry Clark Corbin papers, 1864-1980.
- Corey, Herbert, 1872-1954. Herbert Corey papers, 1847-1954.
- Cornelia Bryce Pinchot papers, 1899-1960.
- Corona Diamond Syndicate. Corona Diamond Syndicate records. circa 1904-1912.
- Correspondence from the Elizabeth Sprague Coolidge Foundation collection, 1894-1953.
- Correspondence of Elizabeth Mitchell Stephenson Fite and the American National Opera Company, 1864-1951.
- Cortelyou, George B. (George Bruce), 1862-1940. George B. Cortelyou papers, 1871-1948.
- Cottrell, Frederick Gardner, 1877-1948. Frederick Gardner Cottrell papers, 1896-1951.
- Couzens, James, 1872-1936. James Couzens papers, 1903-1940.
- Cowell, Henry, 1897-1965. Henry Cowell music manuscripts, 1909-1965.
- Craven, Thomas T. (Thomas Tingey), 1873-1950. Thomas T. Craven papers, 1842-1969.
- Crawford, Rebekah, 1845-1934. Rebekah Crawford and Linda Clarke-Smith papers, 1715-1929.
- Crawford, Richard, 1738-1798. Richard Crawford account and ledger books. 1753-1830.
- Creel, George, 1876-1953. George Creel papers, 1857-1953.
- Cresson, Margaret French, 1889-1973. Margaret French Cresson papers. 1915-1962.
- Crocker, Edward S., II, 1896-1968. Edward S. Crocker II and Lispenard Seabury Crocker papers, 1892-2003.
- Crocker, Lispenard Seabury, 1902-1984. Edward S. Crocker II and Lispenard Seabury Crocker papers.
- Croffut, W. A. (William Augustus), 1835-1915. W.A. Croffut papers, 1774-1933.
- Crosby, Oscar Terry, 1861-1947. Oscar Terry Crosby papers, 1878-1947.
- Cuban Educational Association of the United States of America. Cuban Educational Association of the United States of America records, 1897-1954.
- Cuban Educational Association of the United States of America records, 1897-1954.
- Cui, César, 1835-1918. Syn mandarina.
- Culbertson, William Smith, 1884-1966. William Smith Culbertson papers, 1897-1965.
- Cummings, Harry S., 1866-1917. Harry S. Cummings papers, 1890-1986.
- Cuno Hugo Rudolph papers.
- Cuno Hugo Rudolph scrapbooks, 1910-1929.
- Curry, J. L. M. (Jabez Lamar Monroe), 1825-1903. J.L.M. Curry papers, 1637-1939.
- Curtice, Cooper, 1856-1939. Cooper Curtice papers, 1822-1953.
- Curtis, Joseph O. Joseph O. Curtis papers.
- Curtis L. Malaney papers, 1923-1989.
- Custer, Benjamin S. (Benjamin Scott), 1905-2002. Benjamin S. Custer papers, 1912-2000.
- Cutting, Bronson M., 1888-1935. Bronson M. Cutting papers, 1890-1950.
- Cutts family. Cutts family papers, 1755-1957.
- Cutts family papers, 1755-1957.
- Cyrilla Barr research materials on Elizabeth Sprague Coolidge, 1864-2000.
- Cyrus Robinson Miller papers, 1897-1940.
D
- D. Heywood Hardy papers, 1913-1924.
- Daley, William L. William L. Daley collection relating to Billy Sunday. 1914-1925.
- Damrosch, Frank, 1859-1937. Damrosch - Tee Van Collection. 1856-1969.
- Damrosch, Leopold, 1832-1885. Damrosch - Tee Van collection, 1856-1969.
- Damrosch - Tee Van collection, 1856-1969.
- Daniel Augustus Tompkins papers, 1887-1920.
- Daniel Chester French papers, circa 1848-1968.
- Daniel Edgar Sickles papers, 1821-1918.
- Daniel Scott Lamont papers, 1853-1928.
- Daniels, Josephus, 1862-1948. Josephus Daniels papers, 1829-1948.
- Danilova, Alexandra, 1907-1997. Alexandra Danilova collection, 1920-2000.
- Darrow, Clarence, 1857-1938. Clarence Darrow papers, 1894-1941.
- David E. Finley papers, 1921-1977.
- David Herbert Lawrence papers.
- David Homer Bates papers, 1837-1926.
- David Maydole Matteson papers, 1876-1937.
- David Oppenheim papers, 1910-2004.
- Davidson, Jo, 1883-1952. Jo Davidson papers, 1906-1952.
- Davies, Joseph Edward. Joseph Edward Davies papers, 1860-1958.
- Davis, J. C. Bancroft (John Chandler Bancroft), 1822-1907. J.C. Bancroft Davis papers, 1849-1902.
- Davis, James J. (James John), 1873-1947. James J. Davis papers, 1895-1946.
- Davis, Jefferson, 1808-1889. Jefferson Davis papers, 1795-1913.
- Davis, Norman H. (Norman Hezekiah), 1878-1944. Norman H. Davis papers, 1898-1979.
- Dawes, Anna Laurens, 1851-1938. Anna Laurens Dawes papers.
- Dawes, Electa Allen Sanderson, 1822-1901. Electa Allen Sanderson Dawes papers.
- Dawes, Henry L. (Henry Laurens), 1816-1903. Henry L. Dawes papers, 1833-1933.
- Day, F. Holland (Fred Holland), 1864-1933. F. Holland Day papers, 1793-2010.
- Day, William R. (William Rufus), 1849-1923. William R. Day papers, 1820-1923.
- De Forest, Lee, 1873-1961. Lee de Forest papers, 1884-1955.
- Deane, Ruthven 1851-1934. Ruthven Deane bookplate collection.
- Decatur, Stephen, 1779-1820. Stephen Decatur papers.
- Declaration of Independence collection, 1776-1942.
- Deisch, Noel, 1892-1978. Noel Deisch papers, 1910-1937.
- Demens, Peter A., 1850-1919. Peter A. Demens papers, 1880-2000.
- Denby family. Denby family papers, 1850-1911.
- Denby family papers, 1850-1911.
- Denishawn School of Dancing. Grace McCrea papers relating to Denishawn. 1913-1969.
- Dennett, Tyler, 1883-1949. Tyler Dennett collection relating to John Hay, 1861-1937.
- Densmore, Frances, 1867-1957. Frances Densmore papers, 1883-1957.
- Dermot Heywood Hardy papers.
- Desha, Mary, 1850-1911. Mary Desha papers.
- Dewey, George, 1837-1917. George Dewey map collection. (2)
- Dewey, George, 1837-1917. George Dewey papers.
- Dewey, George, 1837-1917. George Dewey papers, 1805-1949.
- Dewey, Mildred McLean Hazen, 1850-1931. Mildred McLean Hazen Dewey papers.
- Deyo, Morton L. (Morton Lyndholm), 1887-1973. Morton L. Deyo papers, 1911-1981.
- Deyo, Morton L. (Morton Lyndholm), 1887-1973. Morton L. Deyo World War II map collection.
- D.H. Lawrence correspondence, notes, and photographs, 1921-1930.
- D.H. Lawrence papers.
- Diaghilev, Serge, 1872-1929. Serge Lifar collection on Serge Diaghilev, 1750-1950.
- Dickerson, Edward E., 1831-1914. Edward E. Dickerson papers, 1861-1991.
- Dickerson, Wilton H. Biographical sketch of Edward E. Dickerson.
- Dickinson, Anna E. (Anna Elizabeth), 1842-1932. Anna E. Dickinson papers, 1859-1951.
- Dickinson, Charles Monroe, 1842-1924. Charles Monroe Dickinson papers, 1897-1923.
- Dike, Samuel W. (Samuel Warren), 1839-1913. Samuel W. Dike papers, 1870-1913.
- Diroca World War 2 map collection.
- Diroca World War II map collection.
- District of Columbia Woman Suffrage Association. District of Columbia Woman Suffrage Association records.
- Dixon, Frederick, approximately 1868-1923. Frederick Dixon papers, 1897-1923.
- Dixon Jones, Mary Amanda. Mary Amanda Dixon Jones papers, 1839-1925.
- Dmitriĭ Antonovich Volkogonov papers, 1887-1995.
- Dock, Mira Lloyd, 1853-1945. Mira Lloyd Dock papers, 1814-1951.
- Dodd, William E. (William Edward), 1869-1940. William Edward Dodd papers, 1895-1955.
- Donald Wilson papers, 1910-1979.
- Donaldson, David K. David K. Donaldson papers.
- Donaldson family. Pike-McConnell-Donaldson family papers, 1770-1967.
- Donaldson, Lavinia Pike McConnell. Lavinia Pike McConnell Donaldson papers.
- Donch, Henry, 1834-1919. Henry Donch performance library, 1811-1928.
- Donnan, Elizabeth, 1883-1955. Elizabeth Donnan papers.
- Doriot, Georges F. (Georges Frederic), 1899-1987. Georges F. Doriot papers, 1917-1985.
- Dorn, Edward John, 1854-1937. Edward John Dorn papers, 1868-1936.
- Dorothea Dix Lawrence collection, 1856-1980.
- Dorothy G. Wayman papers, 1862-1971.
- Dorsett, Edward Lee, 1883- Edward Lee Dorsett naval historical collection, 1814-1926.
- Dorsey William Hyde papers, 1757-1955.
- Doubleday & Company, Inc. Ken McCormick collection of Doubleday and Company, inc., records. 1882-1992.
- Doubleday and Company, inc., records.
- Douglas, William O. (William Orville), 1898-1980. William O. Douglas papers, 1801-1980.
- Doysié, Abel, 1886-1973. Abel Doysié papers, 1910-1967.
- Driver, William M., -1943 William M. Driver papers.
- Du Pont, Jean Kane Foulke, 1891-1985. Jean Kane Foulke Du Pont papers.
- Dudley Buck papers, 1861-1939.
- Dudley Wright Knox papers, 1864-1950.
- Duke, Vernon, 1903-1969. Vernon Duke collection, 1918-1968.
- Duncan Emrich autograph album collection, 1843-1956.
- Dunham, Katherine. Katherine Dunham collection, 1920-2006.
- Dunn, Lucius C. (Lucius Claude), 1885-1963. Lucius C. Dunn papers, 1902-1957.
- Dunston, Gatewood W. Gatewood W. Dunston collection relating to William Surrey Hart, 1914-1955.
- Dupuis-Delcourt, 1802-1864. Tissandier collection on the history of aeronautics. 1539-1929.
E
- E. Alexander Powell papers, 1893-1957.
- Earl, Ralph, 1751-1801. Ralph Earl papers. 1815-1839.
- Early, Jubal Anderson, 1816-1894. Jubal Anderson Early papers, 1829-1930.
- Eddie Rickenbacker papers, 1915-1973.
- Edgar Alexander Mearns papers, 1864-1918.
- Edgar D. Andrews collection 1917-1974.
- Edgar Stanton Maclay papers, 1782-circa 1918.
- Edison sheet music collection, 1830-1958.
- Edith Benham Helm papers, 1915-1961.
- Edith Jacobson papers, 1922-1977.
- Edmund Clarence Stedman papers, 1871-1923.
- Edmund Cody Burnett papers, 1765-1967.
- Edna St. Vincent Millay papers, 1830-2013.
- Edoardo Weiss papers, 1919-1970.
- Edward E. Dickerson papers, 1861-1991.
- Edward Everett Hayden family papers, 1817-1963.
- Edward Goodrich Acheson papers, 1872-1968.
- Edward Henry Loudenbeck collection, 1917-1919.
- Edward John Dorn papers, 1868-1936.
- Edward L. Bernays papers, 1777-1994.
- Edward L. Thorndike papers, 1900-1938.
- Edward Lee Dorsett naval historical collection, 1814-1926.
- Edward Lee Thorndike papers.
- Edward Lindley Bowles papers, 1869-1990.
- Edward MacDowell Association. Edward MacDowell Association records.
- Edward Miner Gallaudet papers.
- Edward Nealy Kellogg and Edward Stanley Kellogg papers, 1858-1937.
- Edward Nealy Kellogg papers.
- Edward Otto Tabor papers, 1918-1948.
- Edward S. Crocker II and Lispenard Seabury Crocker papers, 1892-2003.
- Edward S. Crocker II papers.
- Edward Settle Godfrey papers, 1863-1933.
- Edward Stanley Kellogg papers.
- Edward W. Washburn family papers, 1817-1934.
- Edward William Bok papers, 1880-1926.
- Edward Willis papers, 1854-1906.
- Edwards, Benjamin K. Benjamin K. Edwards collection.
- Edwin Arlington Robinson papers, 1913-1940.
- Edwin Markham papers, circa 1893-1937.
- Einstein, Albert, 1879-1955. Albert Einstein papers, 1916-1953.
- Elder, Abram P. T. (Abram Peter Turner). Abram P.T. Elder papers, 1890-1916.
- Eleanor Lord Pray papers, 1894-1975.
- Elihu Root papers.
- Elihu Root papers, 1863-1937.
- Elijah Walker Halford papers, 1848-1938.
- Elinor Remick Warren papers, 1872-2004.
- Elizabeth Burt papers, 1797-1917.
- Elizabeth Cady Stanton papers, 1814-1946.
- Elizabeth Madox Roberts papers, 1921-1941.
- Elizabeth Robins Pennell papers.
- Elizabeth Severn and Margaret Severn papers, 1880-1994.
- Elizabeth Severn papers.
- Elizabeth Sprague Coolidge Foundation collection, 1894-1953.
- Ellen N. La Motte collection on opium traffic, 1919-1933.
- Ellery C. Stowell papers, 1805-1952.
- Elliot, Charles N. (Charles Nathan), 1873- Charles N. Elliot collection, 1873-1951.
- Elliot Snow papers, 1790-1942.
- Elliott, Charles B. (Charles Burke), 1861-1935. Charles B. Elliott papers, 1910-1912.
- Ellsworth family. Oliver Ellsworth family papers, 1762-1907.
- Ellsworth, Oliver, 1745-1807. Oliver Ellsworth family papers, 1762-1907.
- Ellyson, Theodore Gordon, 1885-1928. Theodore Gordon Ellyson papers, 1912-1951.
- Elmo N. Pickerill papers, 1910-1975.
- Emerson, Ralph Waldo, 1803-1882. Ralph Waldo Emerson journal.
- Emile Berliner collection, 1871-1965.
- Emily A. Stewart collection of Elihu Root material, 1885-1959.
- Emmons, Samuel Franklin, 1841-1911. Samuel Franklin Emmons papers, 1725-1914.
- Emory Scott Land papers, 1901-1972.
- Emory, William H. (William Hemsley), 1846-1917. William H. Emory papers, 1877-1948.
- Emrich, Duncan, 1908-1977. Duncan Emrich autograph album collection, 1843-1956.
- Engineering Societies Library Collection (Library of Congress).
- Engineering Societies Library. Engineering Societies Library map collection.
- Engineering Societies Library map collection.
- Eno, Amos R. (Amos Richard), 1810-1898. Amos R. Eno papers.
- Eric Johnson collection of Ernest Bloch photographs, 1896-2008.
- Erickson, John Edward, 1863-1946. Thomas James Walsh and John Edward Erickson papers (1910-1934).
- Ernest Bloch collection, 1888-1981.
- Ernest Irving Lewis papers, 1897-1944.
- Ernest John Swift papers, 1908-2019.
- Erwin F. Smith papers, 1876-1927.
- Erwin Frink Smith papers.
- Etelka Freund collection on Béla Bartók, 1903-1971.
- Ethel Armes collection of Lee family papers, 1671-1936.
- Ethel Bartlett and Rae Robertson music and other papers, 1914-1970.
- Ethel M. Fair map collection.
- Eugene Gano Hay papers, 1770-1933.
- Eugene Meyer papers, 1864-1975.
- Eugene Tyler Chamberlain collection relating to French orphans of World War I, 1916-1927.
- Eugenio Carlos de Hostos papers.
- Eugenio María de Hostos and Eugenio Carlos de Hostos papers, 1865-1990.
- Eugenio María de Hostos papers.
- Eva Le Gallienne papers, 1823-1997.
- Evalyn Walsh McLean papers, 1874-1948.
- Evelyn Briggs Baldwin papers, 1649-1933.
- Evelyn Wadsworth Symington collection of John Hay material, 1864-1905.
- Everett, Alexander Hill, 1790-1847. Alexander Hill Everett papers.
- Everett Sanders papers, 1913-1950.
- Everett Strait Hughes map collection.
- Everett Strait Hughes papers, 1903-1975.
- Eversman, Alice, 1885-1974. Alice Eversman and Elena de Sayn papers, 1862-1970s.
- Ewing Harry Miller collection, 1917-1923.
- Exchange and Gift Division series, Library of Congress archives, 1893-1979.
- Ezra Ayers Carman papers, 1861-1909.
F
- F. Holland Day papers, 1793-2010.
- F. Lamson-Scribner papers, 1885-1938.
- Fair, Ethel M. (Ethel Marion). Ethel M. Fair map collection.
- Fairchild, Marian, 1880-1962. Marian Fairchild papers.
- Farley, James A. (James Aloysius), 1888-1976. James A. Farley papers, 1790-1976.
- Farrar, Geraldine, 1882-1967. Geraldine Farrar papers, 1895-1960s.
- Farrior family papers.
- Farrior, Stacy Conrad, 1889-1975. Stacy Conrad Farrior family papers, 1907-1949.
- Fay collection.
- FBJ collection.
- Feamster family. Feamster family papers. 1794-1967.
- Feamster family papers, 1794-1967.
- Federn, Paul. Paul Federn papers, 1864-1975.
- Feinberg, Charles E., 1899-1988. Charles E. Feinberg papers.
- Feinberg, Charles E., 1899-1988. Visual materials from the Walt Whitman papers in the Charles E. Feinberg collection.
- Feinberg, Charles E., 1899-1988. Walt Whitman papers in the Charles E. Feinberg collection.
- Feinberg, Charles E., 1899-1988. Walt Whitman papers in the Charles E. Feinberg collection, 1763-1985.
- Feist collection, 1880-1930.
- Feist, Leo, 1869-1930. Leo Feist collection, 1880-1930.
- Felix Frankfurter papers, 1846-1966.
- Felton, William Hamilton, Jr., 1889-1956. William Hamilton Felton, Jr., collection, 1917-1918.
- Ferde Grofé collection, 1890-1960.
- Fernández Carballido, Rufo Manuel, 1790-1855. Rufo Manuel Fernández Carballido papers.
- Ficher, Jacobo, 1896-1978. Jacobo Ficher collection, 1864-1997.
- Field family. Field-Osgood family papers, 1702-1938.
- Field family papers.
- Field-Osgood family papers, 1702-1938.
- Field, Susan K. Osgood. Susan K. Osgood Field papers.
- Fillebrown, Charles Bowdoin, 1842-1917. Charles Bowdoin Fillebrown papers, 1879-1928.
- Film stills of productions featuring actress May Robson.
- Finley, David E. (David Edward). David E. Finley papers, 1921-1977.
- Fisher, A. K. (Albert Kenrick), 1856-1948. A.K. Fisher papers, 1827-1957.
- Fisher, Anne B. (Anne Benson), 1898-1967 Anne B. Fisher papers.
- Fisher, George P. (George Purnell), 1817-1899. George P. Fisher papers, 1772-1905.
- Fisher, Walter K. (Walter Kenrick), 1878-1953. Walter K. Fisher papers.
- Fisher, Walter L. (Walter Lowrie), 1862-1935. Walter L. Fisher papers, 1871-1963.
- Fiske, Asa Severance, 1833-1925. Asa Severance Fiske papers.
- Fiske, Elizabeth Worthington Hand, 1835-1919. Elizabeth Worthington Hand Fiske papers.
- Fiske family. John Aldrich Stephenson collection of the Hand, Fiske, and Aldrich families papers. 1745-1966.
- Fiske family papers.
- Fiske, Harrison Grey, 1861-1942. Minnie Maddern Fiske and Harrison Grey Fiske papers, 1818-1955.
- Fiske, Minnie Maddern, 1865-1932. Minnie Maddern Fiske and Harrison Grey Fiske papers, 1818-1955.
- Fiske, Samuel Wheelock, 1828-1864. Samuel Wheelock Fiske papers.
- Fite, E. M. S. (Elizabeth Mitchell Stephenson), 1868-1928. Correspondence of Elizabeth Mitchell Stephenson Fite and the American National Opera Company, 1864-1951.
- F.L. and J.C. Olmsted (Firm : 1884-1889). F.L. and J.C. Olmsted (Firm : 1884-1889) records.
- F.L. and J.C. Olmsted (Firm : 1897-1898). F.L. and J.C. Olmsted (Firm : 1897-1898) records. (2)
- F.L. Olmsted and Company. F.L. Olmsted and Company records.
- Flanner, Janet, 1892-1978. Janet Flanner and Solita Solano papers, 1870-1976.
- Flannery, John Spalding, 1870-1954. John Spalding Flannery papers, 1902-1953.
- Flaubert, Gustave, 1821-1880. Salammbo.
- Fleetwood, Christian A. (Christian Abraham), 1840-1914. Christian A. Fleetwood papers, 1797-1945.
- Fleetwood, Sara Iredell Sara Iredell Fleetwood papers.
- Fletcher, Henry Prather, 1873-1959. Henry Prather Fletcher papers, 1898-1958.
- Flexner, Abraham, 1866-1959. Abraham Flexner papers, 1865-1989.
- Fliess, Conrad. Conrad Fliess reminiscences. undated.
- Fliess, Wilhelm, 1858-1928. Wilhelm Fliess papers, 1894-1929.
- Flood, Henry D. (Henry Delaware), 1865-1921. Henry D. Flood papers, 1870-1921.
- Florence Deakins Becker papers, 1891-1963.
- Florence Ellinwood Allen papers, 1907-1965.
- Florence Jaffray Harriman papers, 1857-1982.
- Florence Parr-Gere papers, 1856-1964.
- Floyd family. Campbell-Preston-Floyd families papers, 1741-1931.
- Floyd family papers.
- Foerstel, Lenora, 1929- Lenora Foerstel papers.
- Foote, Arthur, 1853-1937. Arthur Foote music manuscripts 1888-1919.
- Foraker, Joseph Benson, 1846-1917. Joseph Benson Foraker papers, 1884-1916.
- Forbes, W. Cameron (William Cameron), 1870-1959. W. Cameron Forbes papers, 1904-1946.
- Ford, Worthington Chauncey, 1858-1941. Worthington Chauncey Ford papers, 1900-1926.
- Forster, Rudolph, 1872-1943. Rudolph Forster papers, 1898-1943.
- Fortune, Reo, 1903-1979. Reo Fortune papers.
- Fosse, Bob, 1927-1987. Bob Fosse and Gwen Verdon collection, 1920-1991.
- Foster, Idah S. Pratt, 1884-1967. Idah S. Pratt Foster papers, 1912-1967.
- Foulke, William Dudley, 1848-1935. William Dudley Foulke papers, circa 1470-1952.
- Foulois, Benjamin Delahauf, 1879-1967. Benjamin Delahauf Foulois papers, 1898-1966.
- Fowler, Joseph Smith, 1820-1902. Joseph Smith Fowler papers, 1863-1903.
- Fowler, William Chauncey, 1793-1881. William Chauncey Fowler papers.
- Fox, Josiah, 1763-1847. Josiah Fox papers.
- France. Armée. Service géographique. Maps showing entrenchments in France during World War I at a scale of 1:10,000.
- France. Armée. Service géographique. Maps showing entrenchments in France during World War I at a scale of 1:20,000.
- France. Maps showing entrenchments in France during World War I at a scale of 1:20,000.
- Frances Benjamin Johnston papers, 1855-1956.
- Frances Benjamin Johnston photograph collection (Library of Congress). (2)
- Frances Carpenter collection relating to Frank G. Carpenter, 1875-1960.
- Frances Densmore papers, 1883-1957.
- Frances G. Wickes papers, 1896-1996.
- Frances Hawks Cameron Burnett papers, 1818-1936.
- Francis Bowes Sayre papers, 1861-1967.
- Francis Bowler Keene papers, 1856-1975.
- Francis LeJau Parker papers, 1905-1935.
- Francis Lewis Cardozo family papers, 1864-1968.
- Francis Maria Scala collection, 1816-2013.
- Francis Maria Scala papers, 1816-2013.
- Francis Scala papers, 1816-2013.
- Francis Watts Lee papers, 1845-1951.
- Frank G. Carpenter papers.
- Frank George Carpenter papers.
- Frank J. Malina papers, 1912-1986.
- Frank Knox papers, 1898-1954.
- Frank L. Greene papers, 1895-1930.
- Frank L. Stickney papers, 1850-1938.
- Frank Lloyd Wright papers, 1894-1958.
- Frank M. Bennett papers, 1893-1909.
- Frank Maloy Anderson papers, 1895-1961.
- Frank Ross McCoy papers, 1847-1957.
- Frank Van Pelt collection 1917-1931.
- Frank Winfield Woolworth papers, 1859-1980.
- Frankfurter, Felix, 1882-1965. Felix Frankfurter papers, 1846-1966.
- Franklin MacVeagh papers, 1799-1934.
- Franko, Sam, 1857-1937 Autograph collection of musical personalities.
- Frans August Larson family papers, 1864-2021.
- Frantz, Harry W. (Harry Warner), 1891-1982. Harry W. Frantz map collection, 1922-1950.
- Franz Boas papers, 1878-1943.
- Franziska Boas collection, 1920-1988.
- Fred Kenelm Nielsen papers, 1881-1961.
- Frederic Eugene Ives and Herbert Eugene Ives papers, 1869-1957.
- Frederic Eugene Ives papers.
- Frederic William Wile papers.
- Frederic William Wile scrapbooks, 1898-1941.
- Frederick Albert Cook papers, 1881-1977.
- Frederick Cecil Horner papers, 1917-1960.
- Frederick Dixon papers, 1897-1923.
- Frederick Gardner Cottrell papers, 1896-1951.
- Frederick Haynes Newell papers, 1885-1931.
- Frederick Joseph Horne papers, 1893-1967.
- Frederick Joseph Libby papers, 1846-1973.
- Frederick Law Olmsted (Firm). Frederick Law Olmsted (Firm) records.
- Frederick Law Olmsted papers, 1777-1952.
- Frederick Rodgers papers, 1852-1920.
- Freedley, Vinton, 1891-1969. Vinton Freedley papers, 1865-1960.
- French, Daniel Chester, 1850-1931. Daniel Chester French papers, circa 1848-1968.
- Freud, Alexander, 1866-1943. Alexander Freud and Sophie Schreiber Freud papers, 1872-1965.
- Freud, Eva Mathilde, 1924-1944. Eva Mathilde Freud papers. 1924-1945.
- Freud, Henny Fuchs, 1892-1971. Oliver and Henny Fuchs Freud papers. 1821-1968.
- Freud, Oliver, 1891-1969. Oliver Freud and Henny Fuchs Freud papers, 1821-1993.
- Freud, Sigmund, 1856-1939. Sigmund Freud papers, circa 6th century BCE-1998 CE.
- Freud, Sophie Schreiber, 1878-approximately 1965. Alexander Freud and Sophie Schreiber Freud papers. 1872-1965.
- Frewen, Moreton, 1853-1924. Moreton Frewen papers, 1823-1934.
- Frewen, Richard, 1852-1896. Richard Frewen correspondence and journals. 1872-1876.
- Frey, John P. (John Philip), 1871-1957. John P. Frey papers, 1891-1951.
- Frič, Alberto Vojtěch, 1882-1944. Alberto Vojtěch Frič papers.
- Friedman, Harry T. Harry T. Friedman collection of Spanish American documents, circa 1500-1912.
- Friis, Harald T. (Harald Trap), 1893-1976. Harald T. Friis papers, 1921-1976.
- Friis, Herman R. (Herman Ralph), 1905-1989 Herman R. Friis cartographic manuals collection.
- Fritz Kreisler collection, 1845-1969.
- Fromuth, Charles Henry, 1861-1937. Charles Henry Fromuth papers, 1884-1937.
- Frost, Robert, 1874-1963. Untermeyer-Frost collection. 1913-1964.
- Fullam, William F. (William Freeland), 1855-1926. William F. Fullam papers, 1873-1942.
- Fuller, Melville Weston, 1833-1910. Melville Weston Fuller papers, 1794-1949.
- Fuller Sisters collection, 1880-1947.
- Fuller Sisters (Vocal group). Fuller Sisters collection, 1880-1947.
- Furer, Julius Augustus, 1880-1963. Julius Augustus Furer papers, 1910-1962.
- Furlong, William Rea, 1881-1976. William Rea Furlong map collection.
- Furlong, William Rea, 1881-1976. William Rea Furlong papers.
- Furman, Bess, 1894-1969. Bess Furman papers, 1728-1967.
- Furman, Lucile N., 1896-1961. Lucile N. Furman papers.
G
- G. Bromley Oxnam papers, 1823-1963.
- Gage, Lyman J. (Lyman Judson), 1836-1927. Lyman J. Gage correspondence, 1897-1906.
- Gallaudet, Edward Miner, 1837-1917. T.H. Gallaudet and Edward Miner Gallaudet papers. 1806-1958.
- Gallaudet, T. H. (Thomas Hopkins), 1787-1851. T.H. Gallaudet and Edward Miner Gallaudet papers, 1806-1958.
- The Gambia map collection, 1670-1965.
- Garfield, Abram, 1872- Abram Garfield papers.
- Garfield, Harry Augustus, 1863-1942. Harry Augustus Garfield papers, 1855-1961.
- Garfield, Helen Newell, 1866-1930. Helen Newell Garfield papers.
- Garfield, Irvin McDowell, 1870-1951 Irvin McDowell papers.
- Garfield, James A. (James Abram), 1831-1881. James A. Garfield papers.
- Garfield, James Rudolph, 1865-1950. James Rudolph Garfield papers, 1879-1950.
- Garfield, Lucretia Rudolph, 1832-1918. Lucretia Rudolph Garfield papers.
- Garfield, Lucretia Rudolph, 1832-1918. Lucretia Rudolph Garfield papers, 1807-1958.
- Garfinckel's (Department store). Garfinckel's Department Store records, 1919-1981.
- Garfinckel's Department Store records, 1919-1981.
- Garrett, Naomi Mills. Naomi Mills Garrett papers.
- Gary W. North map collection.
- Gatewood W. Dunston collection relating to William Surrey Hart, 1914-1955.
- Gathings, Joseph Royston, I, 1894-1978. Joseph Royston Gathings, I, collection, 1914-1936.
- Gatty, Harold, 1903-1957. Harold Gatty papers, 1901-1957.
- Gbur, Andrew, 1901-1997. Andrew Gbur collection, 1916-1992.
- General William Mitchell papers, 1888-1946.
- Georg Martin Wunderlich papers, 1897-1951.
- George and Böske Antheil papers, circa 1875-1984.
- George and Ira Gershwin collection, 1895-2008.
- George Antheil collection, 1875-1984.
- George Antheil collection, 1919-1931.
- George Antheil collection, 1921-1940.
- George Antheil correspondence to Stanley Hart, 1919-1931.
- George Antheil correspondence with Mary Louise Curtis Bok, 1921-1940.
- George B. Cortelyou papers, 1871-1948.
- George B. McClellan papers, 1838-1922.
- George Biddle papers, 1863-1973.
- George Creel papers, 1857-1953.
- George D. Murray papers, 1916-1956.
- George Dewey map collection.
- George Dewey papers, 1805-1949.
- George E. Belknap papers, 1857-1903.
- George F. Becker papers, 1814-1928.
- George Fort Milton papers, 1828-1985.
- George Foster Peabody papers, 1894-1937.
- George Frederick Kunz papers, 1783-1930.
- George H. Moss collection of sheet music, 1885-1935.
- George Hodges collection, circa 1790-circa 1909.
- George Kennan papers, 1840-1937.
- George Kleine papers, 1886-1946.
- George Korson collection, 1913-1975.
- George Korson folklore archive.
- George L. Tracy collection of music manuscripts, 1877-1920.
- George M. Gould collection of Hearniana, 1877-1931.
- George M. Gould papers.
- George Middleton papers, 1872-1970.
- George Milbry Gould papers.
- George Montfort Gilchrist family papers, 1854-1921.
- George Moss collection, 1885-1935.
- George P. Fisher papers, 1772-1905.
- George P. Merrill correspondence and autographs, 1803-1926.
- George P. Merrill papers.
- George Peabody Wetmore papers, 1885-1916.
- George Perkins Merrill papers.
- George Purnell Fisher papers.
- George S. Kaufman and Anne Kaufman Schneider papers, circa 1892-1998.
- George S. Kaufman collection, circa 1892-1998.
- George S. Kaufman papers, 1911-1941.
- George S. Patton papers, 1807-1979.
- George Sabin Gibbs map collection.
- George Sabin Gibbs papers, 1896-1947.
- George Sherwin Simonds papers, 1894-1937.
- George Simon Kaufman papers.
- George Sutherland papers, 1850-1944.
- George van Deurs papers, 1851-1982.
- George Van Horn Moseley papers, 1855-1960.
- George von Lengerke Meyer papers, 1900-1917.
- George W. Goethals papers, 1830-2014.
- George W. Norris papers, 1864-1954.
- George Washington Pearcy collection, 1915-1949.
- Georges F. Doriot papers, 1917-1985.
- Geraghty, Tom J. Tom J. Geraghty papers, 1923-1965.
- Geraldine Farrar collection, 1895-1943.
- Geraldine Farrar papers, 1895-1960s.
- German captured documents collection, 1766-1945.
- German national music collection, 1846-1974.
- Gershwin, George, 1898-1937. George and Ira Gershwin collection, 1895-2008.
- Gesell, Arnold, 1880-1961. Arnold Gesell papers, 1870-1971.
- Getty family. Gibson-Getty-McClure families papers, 1777-1926.
- Getty, George W. George W. Getty papers. 1847-1913.
- Ghent, William J. (William James), 1866-1942. William J. Ghent papers, 1876-1942.
- Gibbs, George Sabin, 1875-1947. George Sabin Gibbs map collection. (2)
- Gibbs, George Sabin, 1875-1947. George Sabin Gibbs papers.
- Gibbs, George Sabin, 1875-1947. George Sabin Gibbs papers, 1896-1947.
- Gibson family. Gibson-Getty-McClure families papers, 1777-1926.
- Gibson-Getty-McClure families papers, 1777-1926.
- Giffard, Henri, 1825-1882. Henri Giffard papers, 1852-1910.
- Gifford Pinchot papers, 1770-1972.
- Gilbert, Cass, 1859-1934. Cass Gilbert papers, 1841-1961.
- Gilbert, Cass, 1894- Cass Gilbert letterbooks. 1936-1941.
- Gilbert Jonas Company. Gilbert Jonas Company records. 1964-1995.
- Gilbert M. Hitchcock papers, 1910-1935.
- Gilbert Monell Hitchcock papers.
- Gilchrist family. George Montfort Gilchrist family papers, 1854-1921.
- Gilchrist, George Montfort. George Montfort Gilchrist family papers, 1854-1921.
- Gilchrist, Huntington, 1891-1975. Huntington Gilchrist papers, 1913-1973.
- Gish, Lillian, 1893-1993. Lillian Gish papers, 1829-1978.
- Gleason, Arthur, 1878-1923. Arthur Gleason papers, 1863-1931.
- Gleaves, Albert, 1858-1937. Albert Gleaves papers, 1803-1946.
- Glenn Dillard Gunn collection, 1874-1961.
- Glenn Dillard Gunn papers, 1802-1961.
- Glenn L. Martin papers, 1909-1956.
- Gloetzner, Anton. Anton Gloetzner music manuscripts, 1870-1920.
- Gluck, Alma, 1884-1938. Alma Gluck scrapbooks and other materials, 1902-1940.
- Goad, Charles E. Charles E. Goad fire insurance map collection, 1894-1909.
- Goathland, North Yorkshire, sword dance photograph collection, ca. 1912-1950.
- Godfrey, Edward Settle, 1843-1932. Edward Settle Godfrey diary. 1876.
- Godfrey, Edward Settle, 1843-1932. Edward Settle Godfrey papers, 1863-1933.
- Goebel, Julius, 1857-1931. Julius Goebel papers, 1873-1930.
- Goethals, George W. (George Washington), 1858-1928. George W. Goethals papers, 1830-2014.
- Goethals, Thomas R., Jr. Thomas R. Goethals Jr. papers.
- Gold, Julius, 1884-1969. Julius Gold collection, 1858-1964.
- Goldsberry collection of open-air school photographs.
- Goldsberry collection of photographs and periodical illustrations showing young children in "open air" and outdoor schools.
- Goldsberry, Louise Dunham. Goldsberry collection of open-air school photographs.
- Good, Barbara, active 1980-1993. Barbara Good papers.
- Goode, James M. James M. Goode collection.
- Goodell, William, 1792-1867. William Goodell papers, 1818-1917.
- Gordon, Robert Winslow. Robert Winslow Gordon papers, 1840-1961.
- Gorgas, Josiah, 1818-1883. Josiah Gorgas diary.
- Gorgas, William Crawford, 1854-1920. William Crawford Gorgas papers, 1857-1919.
- Gould, Alice Bache, 1868-1953. Alice Bache Gould papers.
- Gould, George M. (George Milbry), 1848-1922. George M. Gould collection of Hearniana, 1877-1931.
- Grace and Gustave Schirmer correspondence and other papers, 1845-1949.
- Grace Elizabeth Allen papers.
- Grace McCrea papers relating to Denishawn, 1913-1969.
- Graf, Rosa Freud, 1860-approximately 1942. Rosa Freud Graf papers, 1879-1942.
- Graham, Harold Benjamin, 1899-1948 Harold Benjamin Graham collection 1917-2012.
- Grainger, Percy, 1882-1961. Reproductions of selected Percy Grainger papers, 1909-1952.
- Grant Richards collection of A.E. Housman material, 1898-1947.
- Greely, A. W. (Adolphus Washington), 1844-1935. A.W. Greely papers, 1753-1997.
- Greely, Henrietta Hudson Cruger Nesmith. Henrietta Hudson Cruger Nesmith Greely papers. 1878-1918.
- Green-Driver collection, 1896-1969.
- Green, John Benjamin, -1934. John Benjamin Green papers.
- Greene, Frank L. (Frank Lester), 1870-1930. Frank L. Greene papers, 1895-1930.
- Greene, Paulette. Paulette Greene papers, 1920-1998.
- Greenewalt, Mary Elizabeth Hallock, 1871-1950. Mary Elizabeth Hallock Greenewalt papers, 1918-1942.
- Greenslade, John Wills, 1880-1950. John Wills Greenslade correspondence transcripts, 1900-2010.
- Greenslade, John Wills, 1880-1950. John Wills Greenslade papers, 1847-1961.
- Gregg, Morris E. Morris E. Gregg papers.
- Gregory, Thomas Watt, 1861-1933. Thomas Watt Gregory papers, 1896-1933.
- Grentzer, Rose Marie. Rose Marie Grentzer and Harold Spivacke Fund collection, 1615-1994.
- Gresham, Pattie, 1882-1960. Green-Driver collection, 1896-1969.
- Gresham, Pattie, 1882-1960. Pattie Gresham papers.
- Grey, Zane, 1872-1939. Zane Grey papers, 1912-1939.
- Grigorʹev, S. L. (Sergeĭ Leonidovich), 1883-1968. Diaghilev ballet, 1909-1929.
- Grigorʹev, S. L. (Sergeĭ Leonidovich), 1883-1968. Serge Grigoriev / Ballets Russes archive, 1909-2009.
- Griscom, Lloyd Carpenter, 1872-1959. Lloyd Carpenter Griscom papers, 1898-1951.
- Grofé, Ferde, 1892-1972. Ferde Grofé collection, 1890-1960.
- Grosvenor, Edwin A. (Edwin Augustus), 1845-1936. Edwin A. Grosvenor papers.
- Grosvenor, Edwin Prescott, 1875-1930. Edwin Prescott Grosvenor papers.
- Grosvenor, Elsie May, 1878-1964. Elsie May Grosvenor papers.
- Grosvenor family. Grosvenor family papers, 1827-1981.
- Grosvenor family papers, 1827-1981.
- Grosvenor, Gilbert Hovey, 1875-1966. Gilbert Hovey Grosvenor papers.
- Grosvenor, Lilian Waters, 1852-1931. Lilian Waters Grosvenor papers.
- Grosvenor, Melville Bell, 1901-1982. Melville Bell Grosvenor papers.
- Grover Cleveland Loening papers, 1900-1975.
- Grover Cleveland papers, 1743-1945.
- Gruenberg, Benjamin C. (Benjamin Charles), 1875-1965. Benjamin C. Gruenberg and Sidonie Matsner Gruenberg papers, 1878-1972.
- Gruenberg, Sidonie Matsner, 1881-1974. Benjamin C. Gruenberg and Sidonie Matsner Gruenberg papers. 1878-1972.
- Guinea-Bissau map collection, 1827-1969.
- Guiney, Louise Imogen, 1861-1920. Louise Imogen Guiney papers, 1884-1920.
- Gunn, Glenn Dillard, 1874-1963. Glenn Dillard Gunn papers, 1802-1961.
- Gunther Schuller papers, 1615-2014.
- Gustave Percival Wiksell papers, 1855-1939.
- Gustave Schirmer-Fay collection.
- Gutzon Borglum papers, 1881-2019.
H
- Hack, Charles W. Charles W. Hack papers, circa 1800-1926.
- Hadley, Lucia Hanna. Lucia Hanna Hadley papers.
- Hagedorn, Hermann, 1882-1964. Hermann Hagedorn papers, 1912-1933.
- Hale, Edward Everett, 1822-1909. Edward Everett Hale papers.
- Hale family. Hale family papers, 1698-1916.
- Hale family papers, 1698-1916.
- Hale, Nathan, 1784-1863. Nathan Hale papers.
- Halford, Elijah Walker, 1843-1938. Elijah Walker Halford papers, 1848-1938.
- Hall, Asaph, III, 1829-1907. Asaph Hall, III, papers.
- Hall, Asaph, III, 1829-1907. Asaph Hall papers, 1837-1998.
- Hall, Asaph, IV, 1859-1930. Asaph Hall, IV, papers.
- Hall Johnson collection, 1925-1970.
- Hall Johnson papers, 1913-1980.
- Halsted B. VanderPoel literary collection, 1815-1929.
- Ham, Connelly, Parks, and Snodgrass families papers, 1870-2018.
- Ham family. Ham, Connelly, Parks, and Snodgrass families papers, 1870-2018.
- Ham family papers.
- Hambitzer, Charles, -1918. Charles Hambitzer music manuscripts, circa 1910-1918.
- Hamlin, Anna, -1925. Anna Hamlin papers.
- Hamlin, Charles S. (Charles Sumner), 1861-1938. Charles S. Hamlin papers, 1869-1968.
- Hamlin, Huybertie Pruyn, 1873-1964. Huybertie Pruyn Hamlin papers.
- Hammer, Armand, 1898-1990. Armand Hammer papers, circa 1508-1989.
- Hammerstein, Oscar, II, 1895-1960. Oscar Hammerstein II collection, 1847-2000.
- Hammond Incorporated. Hammond World Atlas Corporation archive of print records and samples of printing methods.
- Hammond, John Hays, 1888-1965. John Hays Hammond papers, 1908-1965.
- Hammond Reed Company correspondence, 1905-1913.
- Hammond Reed Company. Hammond Reed Company correspondence, 1905-1913.
- Hammond World Atlas Corporation archive of print records and samples of printing methods.
- Hampton family. Wade Hampton family papers, 1855-1935.
- Hampton, Vernon Boyce, 1897-1985. Vernon Boyce Hampton papers, 1872-1971.
- Hampton, Wade, 1818-1902. Wade Hampton family papers, 1855-1935.
- Hand, Catharine Worthington Fowler, 1801-1865. Catharine Worthington Fowler Hand papers.
- Hand family. John Aldrich Stephenson collection of the Hand, Fiske, and Aldrich families papers. 1745-1966.
- Hand family papers.
- Hand, Joseph Winborn, 1792-1844. Joseph Winborn Hand papers.
- Hand, Learned, 1872-1961. Learned Hand trial summaries, 1909-1924.
- Hanna family. Hanna-McCormick family papers, 1792-1985.
- Hanna, Marcus Alonzo, 1837-1904. Marcus Alonzo Hanna papers.
- Hanna-McCormick family papers, 1792-1985.
- Hannah G. Solomon papers, 1817-1986.
- Hans Hermann Carl Ludwig, Graf von Berlepsch, correspondence, 1874-1913.
- Hans Hermann Carl Ludwig, Graf von Berlepsch, papers.
- Hans Spialek papers, 1895-1984.
- Hanson Weightman Baldwin papers, 1920-1978.
- Hapgood, Elizabeth Reynolds. Norman Hapgood and Elizabeth Reynolds Hapgood papers. 1824-1977.
- Hapgood, Norman, 1868-1937. Norman Hapgood and Elizabeth Reynolds Hapgood papers, 1824-1977.
- Harald T. Friis papers, 1921-1976.
- Harbord, James G. (James Guthrie), 1866-1947. James G. Harbord papers, 1886-1938.
- Harding, Fann. Fann Harding papers.
- Harding, T. Swann (Thomas Swann), 1890- T. Swann Harding papers, 1918-1963.
- Harding, Warren G. (Warren Gamaliel), 1865-1923. Warren G. Harding-Carrie Fulton Phillips correspondence, 1910-1924.
- Harding, Warren G. (Warren Gamaliel), 1865-1923. Warren G. Harding papers, 1908-1926.
- Hardy, D. Heywood (Dermot Heywood), 1893-1982. D. Heywood Hardy papers, 1913-1924.
- Harlan, James, 1800-1863. James Harlan papers. 1810-1863.
- Harlan, John Marshall, 1833-1911. John Marshall Harlan papers, 1810-1971.
- Harold Bauer collection, 1886-1951.
- Harold Benjamin Graham collection 1917-2012.
- Harold Gatty papers, 1901-1957.
- Harold Raymond Wayne Benjamin papers, 1908-1972.
- Harriet Hoctor collection, 1868-1977.
- Harriman, Florence Jaffray, 1870-1967. Florence Jaffray Harriman papers, 1857-1982.
- Harriman, Jarvis. Jarvis Harriman papers. 1964-1965.
- Harriman, W. Averell (William Averell), 1891-1986. W. Averell Harriman papers, 1869-2001.
- Harrington, Page, 1967- Page Harrington papers.
- Harrington Putnam papers, 1909-1928.
- Harriot Stanton Blatch papers, 1907-1915.
- Harris, William Torrey, 1835-1909. William Torrey Harris papers, 1865-1908.
- Harrison, Benjamin, 1833-1901. Benjamin Harrison papers, 1780-1948.
- Harrison, Burton, Mrs., 1843-1920. Mrs. Burton Harrison papers.
- Harrison, Burton Norvell, 1838-1904. Burton Norvell Harrison family papers, 1812-1926.
- Harrison, Fairfax, 1869-1938. Fairfax Harrison papers.
- Harrison family. Burton Norvell Harrison family papers, 1812-1926.
- Harrison, Francis Burton, 1873-1957. Francis Burton Harrison papers.
- Harrison Grey Fiske papers.
- Harrison, J. B. (Jesse Burton), 1805-1841. J.B. Harrison papers.
- Harrison, Leland, 1883-1951. Leland Harrison papers, 1915-1947.
- Harrison, Richard Edes. Richard Edes Harrison maps and papers collection.
- Harrison, Samuel Jordan, 1771-1846. Samuel Jordan Harrison papers.
- Harry and Sara Lepman collection, 1890-1945.
- Harry Augustus Garfield papers, 1855-1961.
- Harry C. Oberholser papers, 1856-1960.
- Harry N. Sargent papers, 1917-1920.
- Harry Payne Whitney collection of letters of William Collins Whitney, 1757-1942.
- Harry S. Cummings papers, 1890-1986.
- Harry T. Friedman collection of Spanish American documents, circa 1500-1912.
- Harry T. Friedman papers.
- Harry Von Tilzer and H. Harold Gumm papers, 1878-1959.
- Harry W. Frantz map collection, 1922-1950.
- Hart, Ira. Ira Hart sermon notes.
- Hart, Stanley. George Antheil correspondence to Stanley Hart. 1919-1931.
- Hart, William S. (William Surrey), 1864-1946. Gatewood W. Dunston collection relating to William S. Hart. 1914-1955.
- Hartt, Charles Frederick, 1840-1878. Charles Frederick Hartt papers.
- Harvey Washington Wiley papers, 1854-1954.
- Harvey, Winfield S. Winfield S. Harvey diary. 1868-1871.
- Hasse, Adelaide R. (Adelaide Rosalia), 1868-1953. Adelaide Rosalia Hasse papers, 1862-1951.
- Hasson, Esther Voorhees, 1867-1942. Esther Voorhees Hasson journal. 1899.
- Haupt, Herman, 1817-1905. Herman Haupt letterbook. 1861-1863.
- Haupt, Lewis M. (Lewis Muhlenberg), 1844-1937. Lewis M. Haupt papers, 1849-1923.
- Hawley, Joseph R. (Joseph Roswell), 1826-1905. Joseph R. Hawley papers, 1638-1906.
- Hay, Clara Louise Stone, 1849-1914 Clara Louise Stone Hay correspondence. 1882-1914.
- Hay, Eugene Gano, 1853-1933. Eugene Gano Hay papers, 1770-1933.
- Hay, John, 1838-1905. John Hay papers, 1783-1999.
- Hay, John, 1838-1905. John Hay papers. 1861-1959.
- Hayden, Alfred, 1894- Alfred Hayden papers.
- Hayden, Edward Everett, 1858-1932. Edward Everett Hayden family papers, 1817-1963.
- Hayden family. Edward Everett Hayden family papers, 1817-1963.
- Hayden, Herbert B. (Herbert Bainbridge), 1885-1969. Herbert B. Hayden papers.
- Hayden, Mary Bainbridge, 1895- Mary Bainbridge Hayden papers.
- Hayden, Reynolds, 1883- Reynolds Hayden papers.
- Hayden, William, 1795-1880. William Hayden papers.
- Hayes, Barbara Monteath Kelman, 1893-1975. Barbara Monteath Kelman Hayes papers.
- Hayes, David, 1832-1865. David Hayes papers.
- Hayes family. Hayes, Hollister, and Kelman families papers, 1826-2012.
- Hayes family papers.
- Hayes, Hammond Vinton, 1860-1947. Hammond Vinton Hayes papers.
- Hayes, Hollister, and Kelman families papers, 1826-2012.
- Hayes, John David, 1888-1957. John David Hayes papers.
- Hayes, Margaret Young, 1857-1949. Margaret Young Hayes papers.
- Hayes, W. M. (Watson M.), 1857-1944. W.M. Hayes papers.
- Hearn, Lafcadio, 1850-1904. George M. Gould collection of Hearniana. 1877-1931.
- Heath, Perry S. (Perry Sanford), 1857-1927. Perry S. Heath papers, 1890-1983.
- Heaton architectural drawing archive (Library of Congress).
- Heaton archive.
- Heaton, Arthur B., 1875-1951. Heaton architectural drawing archive (Library of Congress).
- Heaton collection.
- Heezen-Tharp collection.
- Heifetz collection, 1802-1987.
- Heifetz, Jascha, 1901-1987. Jascha Heifetz papers, 1786-1991.
- Heilbronner, Raoul. Raoul Heilbronner papers, 1887-1952.
- Helen Hopekirk collection, 1875-1954.
- Helen Keller papers, 1842-1954.
- Helen Merrell Lynd papers.
- Helm, Edith Benham, 1874-1962. Edith Benham Helm papers, 1915-1961.
- Henderson, James Houston, 1878-1935. James Houston Henderson papers, 1913-1920.
- Hendrik Christian Andersen papers, 1844-1940.
- Henny Fuchs Freud papers.
- Henri Giffard papers, 1852-1910.
- Henry Albert Monday collection relating to Mexico, 1522-1935.
- Henry Barrett Learned papers, 1907-1931.
- Henry Clark Corbin papers, 1864-1980.
- Henry Cowell music manuscripts, 1909-1965.
- Henry Croskey Mustin papers, 1886-1924.
- Henry D. Flood papers, 1870-1921.
- Henry Donch performance library, 1811-1928.
- Henry Ives diaries, 1857-1914.
- Henry Ives papers.
- Henry Justin Allen papers, 1896-1942.
- Henry L. Dawes papers, 1833-1933.
- Henry M. Robert papers, 1853-1937.
- Henry Morgenthau papers, 1795-1941.
- Henry Northrup Castle family papers, 1394-1920.
- Henry P. Joslyn music manuscripts, 1912-1971.
- Henry Prather Fletcher papers, 1898-1958.
- Henry S. Pritchett papers, 1876-1967.
- Henry Sapoznik collection, circa 1920-1960.
- Henry T. Allen papers, 1806-1933.
- Henry T. Mayo papers, 1866-1972.
- Henry Thomas Rainey papers, 1904-1934.
- Henry Ware Lawton papers, 1849-1930.
- Henry Watterson papers, 1863-1920.
- Henry White papers, 1812-1931.
- Henry William Parsons papers, 1871-1986.
- Herbert Benjamin papers, 1915-2004.
- Herbert Corey papers, 1847-1954.
- Herbert E. French photograph collection.
- Herbert Eugene Ives papers.
- Herbert Putnam papers, 1783-1958.
- Herbert, Victor, 1859-1924. Victor Herbert collection, 1880-1939.
- Herman Hollerith papers, 1850-1982.
- Herman R. Friis cartographic manuals collection.
- Hermann Hagedorn papers, 1912-1933.
- Herndon-Weik collection of Lincolniana, circa 1824-1933.
- Herndon, William Henry, 1818-1891. William Henry Herndon papers. 1849-1891.
- Herscher, Lou (Louis), 1894-1974. Lou Herscher music manuscripts, 1896-1968.
- Hilary Pollard Jones papers, 1889-1937.
- Hildebrandt, A. (Alfred), 1870-1949. A. Hildebrandt papers, 1826-1943.
- Hileman, Grace. Grace Hileman correspondence. 1923-1936.
- Hill, John Philip, 1879-1941. John Philip Hill scrapbooks, 1906-1938.
- Hillard, Harriet Low, 1809-1877. Harriet Low Hillard papers.
- Hillcrest Children's Center (Washington, D.C.). Hillcrest Children's Center (Washington, D.C.) records, 1815-1966.
- Hillcrest Children's Center (Washington, D.C.). Hillcrest Children's Center (Washington, D.C.) records. 1953-1966.
- Hillcrest Children's Center (Washington, D.C.) records, 1815-1966.
- Hillcrest Children's Village (Washington, D.C.) Hillcrest Children's Village (Washington, D.C.) records. 1927-1953.
- Hilsberg, Leon, 1887-1957. Leon Hilsberg collection, 1906-1941.
- Himmler, Heinrich, 1900-1945. Himmler Files.
- Hines, John Leonard, 1868-1968. John Leonard Hines map collection. (2)
- Hines, John Leonard, 1868-1968. John Leonard Hines papers.
- Hines, John Leonard, 1868-1968. John Leonard Hines papers, 1881-1944.
- Hitchcock, Gilbert M. (Gilbert Monell), 1859-1934. Gilbert M. Hitchcock papers, 1910-1935.
- Hitt, Robert R. (Robert Roberts), 1834-1906. Robert R. Hitt papers, 1830-1906.
- Hobson, Richmond Pearson, 1870-1937. Richmond Pearson Hobson papers, 1889-1966.
- Hoctor, Harriet. Harriet Hoctor collection, 1868-1977.
- Hodges collection, circa 1790-circa 1909.
- Hodges family collection, circa 1790-circa 1909.
- Hodges family. Hodges family collection, circa 1790-circa 1909.
- Hoes, Roswell Randall, 1850-1921. Roswell Randall Hoes papers, 1799-1912.
- Holden Chester Richardson papers, 1844-1946.
- Hollerith, Herman, 1860-1929. Herman Hollerith papers, 1850-1982.
- Hollister family. Hayes, Hollister, and Kelman families papers, 1826-2012.
- Hollister family papers.
- Hollister, Margaret Hayes, 1917- Margaret Hayes Hollister papers.
- Holmes, Oliver Wendell, 1809-1894. Oliver Wendell Holmes papers, 1837-1931.
- Holmes, Oliver Wendell, Jr., 1841-1935. Manuscript holdings from the Library of Oliver Wendell Holmes, Jr. : ca. 1450-1935.
- Homes and haunts of notable Americans.
- Hooper, Stanford Caldwell, 1884-1955. Stanford Caldwell Hooper papers, 1899-1955.
- Hoover, Irwin Hood, 1871-1933. Irwin Hood Hoover papers, 1909-1933.
- Hopekirk, Helen. Helen Hopekirk collection, 1875-1954.
- Hopkins, Charlotte Everett. Charlotte Everett Hopkins collection of National Civic Federation. Woman's Department. District of Columbia Section records, 1900-1926.
- Hopkins, Cornelia Lee, 1780-1815. Cornelia Lee Hopkins papers.
- Horace Callaway Carlisle papers.
- Horace Callaway Carlisle poems, 1900-1956.
- Horace H. Lurton papers, 1860-1915.
- Horace Harmon Lurton papers.
- Horace Porter papers, 1853-1922.
- Horace Traubel and Anne Montgomerie Traubel papers, 1824-1979.
- Horace Traubel papers.
- Hornaday, William T. (William Temple), 1854-1937. William T. Hornaday papers, 1866-1975.
- Hornak family album.
- Horne, Frederick Joseph, 1880-1959. Frederick Joseph Horne papers, 1893-1967.
- Horner, Frederick Cecil, 1887-1974. Frederick Cecil Horner papers, 1917-1960.
- Horner, Mabel Carlton, 1872-1961. Mabel Carlton Horner biography of Caleb Henry Carlton.
- Hostos, Eugenio Carlos de, 1879-1959. Eugenio María de Hostos and Eugenio Carlos de Hostos papers. 1865-1990.
- Hostos, Eugenio María de, 1839-1903. Eugenio María de Hostos and Eugenio Carlos de Hostos papers. 1865-1990.
- Housman, A. E. (Alfred Edward), 1859-1936. A.E. Housman papers, 1906-1940.
- Houston, Charles Hamilton, 1895-1950. Charles Hamilton Houston papers. 1871-1935.
- Houston family. William LePre Houston family papers, 1777-1936.
- Houston, William LePre. William LePre Houston family papers, 1777-1936.
- Howard Elbridge Robbins collection 1918.
- Howard family. Howard-von Recum family papers, 1869-1972.
- Howard family papers.
- Howard, Henry, Sir, 1843-1921. Howard-von Recum family papers, 1869-1972.
- Howard, Jack R. (Jack Rohe), 1910- Jack R. Howard papers.
- Howard, Roy Wilson, 1883-1964. Roy Wilson Howard papers, 1911-1966.
- Howard-von Recum family papers, 1869-1972.
- Howe, Julia Ward, 1819-1910. Julia Ward Howe papers, 1845-1917.
- Hoxie, R. L. (Richard Leveridge), 1844-1930. Vinnie Ream and R.L. Hoxie papers. 1853-1937.
- Hubbard, Gardiner G. (Gardiner Greene), 1822-1897. Gardiner G. Hubbard papers.
- Hubbell, Julian B. (Julian Bertine), 1847-1929. Julian B. Hubbell papers.
- Huebsch, B. W. (Benjamin W.), 1876-1964. B.W. Huebsch papers, 1893-1964.
- Hugh Lenox Scott papers, 1582-1981.
- Hughes, Charles Evans, 1862-1948. Charles Evans Hughes papers, 1836-1950.
- Hughes, David Charles, 1832-1909. David Charles Hughes papers.
- Hughes, Everett Strait, 1885-1957. Everett Strait Hughes map collection. (2)
- Hughes, Everett Strait, 1885-1957. Everett Strait Hughes papers.
- Hughes, Everett Strait, 1885-1957. Everett Strait Hughes papers, 1903-1975.
- Hughes, Robert Patterson, 1839-1909. Robert Patterson Hughes papers, 1876-1994.
- Hugo Kortschak correspondence and photographs, 1904-1950.
- Hugo Leichtentritt papers, 1888-1972.
- Hull, Anne. Anne Hull papers, 1894-1981.
- Hulsizer family. Hulsizer family papers, 1915-1941.
- Hulsizer family papers, 1915-1941.
- Humphrey, William E. (William Ewart), 1862-1934. William E. Humphrey papers, 1903-1936.
- Hunsberger, George S., 1914- George S. Hunsberger papers.
- Huntington Gilchrist papers, 1913-1973.
- Hurn, William, Jr., 1894-1925. William Hurn, Jr., collection 1917-2014.
- Hyde, Dorsey William, 1888-1955. Dorsey William Hyde papers, 1757-1955.
I
- Ickes, Harold L. (Harold LeClair), 1874-1952. Harold L. Ickes papers.
- Idah S. Pratt Foster papers, 1912-1967.
- Ince, Thomas H. Thomas H. Ince papers, 1913-1964.
- Ingersoll, Royal E. (Royal Eason), 1883-1976. Royal Rodney Ingersoll and Royal E. Ingersoll papers. 1884-1931.
- Ingersoll, Royal Rodney, 1847-1931. Royal Rodney Ingersoll and Royal E. Ingersoll papers, 1866-1935.
- Initiatives of Change (Organization). Initiatives of Change records. (2)
- Inman, Samuel Guy, 1877-1965. Samuel Guy Inman papers, 1901-1965.
- Institute for Intercultural Studies. Institute for Intercultural Studies records.
- Institute of the Aerospace Sciences archives, 1783-1962.
- Institute of the Aerospace Sciences. Institute of the Aerospace Sciences archives.
- Instytut mystet︠s︡tvoznavstva, folʹkloru ta etnohrafiï im. M.T. Rylʹsʹkoho. Rylʹsʹkyĭ Institute Ukrainian cylinder collection, 1908-1930s.
- Irene Aloha Wright papers, 1620-1977.
- Irita Van Doren papers, 1920-1967.
- Irvine Luther Lenroot papers, 1858-1971.
- Irving Berlin collection, 1895-1990.
- Irving Langmuir papers, 1871-1957.
- Irwin Hood Hoover papers, 1909-1933.
- Isabel Gordon Carter collection, 1921-1942.
- Isabelle Sayers papers, circa 1886-1980.
- Isakower, Otto, 1899-1972. Otto Isakower and Salomea Isakower papers, 1880-1975.
- Isakower, Salomea, 1888- Otto Isakower and Salomea Isakower papers. 1880-1975.
- Israel Perlstein collection relating to Imperial Russia, 1613-1914.
- Isthmian Canal Commission (U.S.) Isthmian Canal Commission (U.S.) records. (2)
- Ives, Frederic Eugene, 1856-1937. Frederic Eugene Ives and Herbert Eugene Ives papers, 1869-1957.
- Ives, Henry, 1830- Henry Ives diaries, 1857-1914.
- Ives, Herbert Eugene, 1882-1953. Frederic Eugene Ives and Herbert Eugene Ives papers. 1869-1957.
- Izard, Elizabeth C. (Elizabeth Carter), approximately 1774-1826. Elizabeth C. Izard papers.
J
- J. Franklin Jameson papers, 1604-1994.
- J. Laurence Laughlin papers, 1902-1931.
- J. Thomas Schneider map collection.
- J. Thomas Schneider papers, 1915-1960.
- Jack Butterworth collection of silent film cues, 1917-1929.
- Jack, Cerise C. Cerise C. Jack papers relating to the Sacco and Vanzetti case, circa 1921-1999.
- Jacob A. Riis papers, 1870-1990.
- Jacobi, Mary Putnam, 1842-1906. Mary Putnam Jacobi correspondence.
- Jacobo Ficher collection, 1864-1997.
- Jacobs-Bond, Carrie, 1862-1946. Carrie Jacobs-Bond collection, circa 1896-circa 1944.
- Jacobs-Bond collection, circa 1896-circa 1944.
- Jacobson, Edith. Edith Jacobson papers, 1922-1977.
- Jacques Loeb papers, 1889-1924.
- James A. Farley papers, 1790-1976.
- James Alexander Robertson papers, 1816-1939.
- James Couzens papers, 1903-1940.
- James Dodson Barbee and David Rankin Barbee papers, 1784-1953.
- James G. Harbord papers, 1886-1938.
- James Harrison Wilson papers, circa 1862-1923.
- James, Henry, 1879-1947. Henry James research files.
- James Houston Henderson papers, 1913-1920.
- James J. Davis papers, 1895-1946.
- James M. Goode collection.
- James McKeen Cattell papers, 1835-1948.
- James McNeill Whistler papers.
- James R. Mann papers, 1887-1922.
- James Rudolph Garfield papers, 1879-1950.
- James Wadsworth family papers, 1730-1959.
- James Whitcomb Riley papers, 1883-1915.
- Jameson, J. Franklin (John Franklin), 1859-1937. J. Franklin Jameson papers, 1604-1994.
- Jardine, William Marion, 1879-1955. William Marion Jardine papers, 1908-1955.
- Jascha Heifetz collection, 1802-1987.
- Jascha Heifetz papers, 1786-1991.
- J.B. Lippincott & Co. J.B. Lippincott & Co. records.
- J.C. Bancroft Davis papers, 1849-1902.
- Jean Ritchie and George Pickow collection, 1923-2015.
- Jeannette Thurber Connor collection of Floridiana, 1570-1927.
- Jefferson Davis papers, 1795-1913.
- Jefferson Patterson papers, 1824-1981.
- Jelliffe, Helena Dewey Leeming, -1916. Correspondence and diary.
- Jelliffe, Smith Ely, 1866-1945. Smith Ely Jelliffe papers, 1882-1977.
- Jennie Lorenz collection relating to Charlotte Cushman, 1830-1960.
- Jennie Lorenz papers.
- Jerauld Wright papers, 1853-1960.
- Jerome Kern collection, 1905-1951.
- Jesup, Thomas Sidney, 1788-1860. Thomas Sidney Jesup papers, 1780-1907.
- J.G. Randall and Ruth Painter Randall papers, 1779-1970.
- J.G. Randall papers.
- Jim Walsh papers, 1867-1987, and undated.
- Jiménez, Juan Ramón, 1881-1958. Juan Ramón Jiménez papers, 1901-1954.
- J.L.M. Curry papers, 1637-1939.
- Jo Davidson papers, 1906-1952.
- Joel Thompson Boone papers, 1755-1971.
- John Adams Kingsbury papers, 1841-1966.
- John Alden Carpenter collection, 1891-1961.
- John Aldrich Stephenson collection of the Hand, Fiske, and Aldrich families papers, 1745-1966.
- John Alexander Logan family papers, 1836-1925.
- John Archer Lejeune papers, 1815-1950.
- John Austin Moon papers, 1832-1921.
- John Barrett papers, 1861-1943.
- John Bassett Moore papers, 1866-1949.
- John Bigelow papers, 1492-1936.
- John Burroughs papers.
- John C. Merriam papers, 1899-1938.
- John C. Spooner papers, 1855-1909.
- John Callan O'Laughlin papers, 1895-1949.
- John Calvin Leonard papers, 1882-1920.
- John Carroll Parent, Sr., collection 1907-2015.
- John Crittenden Watson papers, 1844-1960.
- John D. Whiting papers, 1890-1970.
- John Davis Batchelder collection of manuscripts, 1537-1944.
- John Davis Batchelder ephemera and special collections, 2200 BCE-1948.
- John Edward Erickson papers.
- John Forsyth Meigs papers, 1914-1940.
- John G. Nicolay papers, 1811-1943.
- John H. Towers papers, 1830-1989.
- John Hay papers.
- John Hay papers, 1783-1999.
- John Hays Hammond papers, 1908-1965.
- John J. Pershing papers, 1882-1971.
- John James Beckley family papers, 1789-1918.
- John Kieran papers, 1917-1985.
- John L. McCrea papers, 1898-1984.
- John L. McCrea papers (Naval Historical Foundation collection).
- John Lansing Callan papers, 1907-1956.
- John Leonard Hines map collection.
- John Leonard Hines papers, 1881-1944.
- John Marshall Harlan papers, 1810-1971.
- John McAuley Palmer papers, 1863-1977.
- John McGlinn collection, 1890s-2010.
- John McRae Kennelly collection 1917-1919.
- John Merven Carrère papers, 1894-1911.
- John P. Frey papers, 1891-1951.
- John Philip Hill papers.
- John Philip Hill scrapbooks, 1906-1938.
- John Philip Sousa collection 1849-2004.
- John Purroy Mitchel papers, 1835-1932.
- John Robert Procter papers, 1867-1903.
- John Sharp Williams papers, 1902-1924.
- John Spalding Flannery papers, 1902-1953.
- John Spencer Bassett papers, 1770-1978.
- John Thomas Schneider papers.
- John Tyler Morgan papers, 1840-1907.
- John Tyler papers, 1691-1918.
- John Vance Cheney papers, 1847-1927.
- John W. Colbert papers, 1895-1966.
- John William "Blind" Boone music, ca. 1907-1918.
- John William Colbert papers.
- John Wills Greenslade correspondence transcripts, 1900-2010.
- John Wills Greenslade papers.
- John Wills Greenslade papers, 1847-1961.
- Johnson, Adelaide, 1859-1955. Adelaide Johnson papers, 1873-1947.
- Johnson, Eric. Eric Johnson collection of Ernest Bloch photographs, 1896-2008.
- Johnson, Hall, 1888-1970. Hall Johnson papers, 1913-1980.
- Johnson, Nelson T. (Nelson Trusler), 1887-1954. Nelson T. Johnson papers, 1916-1955.
- Johnston, Frances Benjamin, 1864-1952. Frances Benjamin Johnston papers, 1855-1956.
- Johnston, Frances Benjamin, 1864-1952. Frances Benjamin Johnston photograph collection (Library of Congress).
- Johnston, Frances Benjamin, 1864-1952. Papers of Frances Benjamin Johnston.
- Johnston, John, 1852-1927. John Johnston papers.
- Johnston, Mercer Green, 1868-1954. Mercer Green Johnston papers, 1860-1954.
- Johnston photograph collection.
- Johnston, William Dawson, 1871-1928. William Dawson Johnston papers, 1842-1927.
- Jones, Hilary Pollard, 1863-1938. Hilary Pollard Jones papers, 1889-1937.
- Jordan family papers.
- Jordan, Nelson W., 1842-1922. Nelson W. Jordan family papers, circa 1864-2003.
- José Ignacio Rodríguez papers, 1860-1907.
- Josef Breuer papers, 1859-1970.
- Joseph Arthur Moore papers, 1910-1927.
- Joseph Benson Foraker papers, 1884-1916.
- Joseph Edward Davies papers, 1860-1958.
- Joseph Hodges Choate papers, 1745-1929.
- Joseph J. Roberts family papers, 1839-2001.
- Joseph Jenkins Roberts family papers.
- Joseph P. Tumulty papers, 1898-1969.
- Joseph Pennell papers.
- Joseph Pulitzer papers, 1880-1924.
- Joseph R. Hawley papers, 1638-1906.
- Joseph Royston Gathings, I, collection, 1914-1936.
- Joseph Sanford Wade papers, 1898-1955.
- Joseph Smith Fowler papers, 1863-1903.
- Joseph Strauss papers, 1884-1949.
- Joseph Warren Beach papers, 1891-1955.
- Josephus Daniels papers, 1829-1948.
- Joshua Lawrence Chamberlain papers, 1775-1913.
- Joslyn, Henry P., 1884-1931. Henry P. Joslyn music manuscripts, 1912-1971.
- Juan Ramón Jiménez papers, 1901-1954.
- Jubal Anderson Early papers, 1829-1930.
- Judson King papers, 1900-1959.
- Julia Ward Howe papers, 1845-1917.
- Julius Augustus Furer papers, 1910-1962.
- Julius Goebel papers, 1873-1930.
- Julius Gold collection, 1858-1964.
- Junta (New York, N.Y.) Junta (New York, N.Y.) records. 1868-1870.
- Justin G. Turner autograph collection, 1763-1968.
K
- Kantor, Effie McKinlay, 1879-1931. Effie McKinlay Kantor papers.
- Kantor, Irene Layne, 1905-1982. Irene Layne Kantor papers.
- Kantor, MacKinlay, 1904-1977. MacKinlay Kantor papers, 1885-1998.
- Karl Abraham papers, 1908-1925.
- Karl Bender World War II German military intelligence map collection.
- Katharine Amend Kellock papers, 1924-1969.
- Katharine McCook Knox papers, 1802-1975.
- Katherine Dunham collection, 1920-2006.
- Kaufman, George S. (George Simon), 1889-1961. George S. Kaufman and Anne Kaufman Schneider papers, circa 1892-1998.
- Kaufman, George S. (George Simon), 1889-1961. George S. Kaufman papers, 1911-1941.
- Keene, Francis Bowler, 1856-1945. Francis Bowler Keene papers, 1856-1975.
- Keidel family. Keidel family papers, 1821-1937.
- Keidel family papers, 1821-1937.
- Keidel, George C. (George Charles), 1868-1942. George C. Keidel papers. 1821-1934.
- Keller, Helen, 1880-1968. Helen Keller papers, 1842-1954.
- Kellinger, Cesi, 1922-2014. Cesi Kellinger collection of dance materials, 1842-1994.
- Kellock, Harold, 1879-1953. Harold Kellock papers. 1929.
- Kellock, Katharine Amend, 1892-1984. Katharine Amend Kellock papers, 1924-1969.
- Kellogg, Edward Nealy, 1841-1874. Edward Nealy Kellogg and Edward Stanley Kellogg papers, 1858-1937.
- Kellogg, Edward Stanley, 1870-1948. Edward Nealy Kellogg and Edward Stanley Kellogg papers. 1858-1937.
- Kelman family. Hayes, Hollister, and Kelman families papers, 1826-2012.
- Kelman family papers.
- Kelman, John, 1864-1929. John Kelman papers.
- Ken McCormick collection of Doubleday and Company, inc., records, 1882-1992.
- Kendrick-Brooks family papers, 1831-2000.
- Kendrick family. Kendrick-Brooks family papers, 1831-2000.
- Kendrick, Hattie, 1894-1989. Hattie Kendrick papers. 1942-2000.
- Kendrick, Ruby Moyse, 1886-1986. Ruby Moyse Kendrick papers. 1892-1995.
- Kenje Ogata collection, 1924-2002, 2008, 2011.
- Kennan, George, 1845-1924. George Kennan papers, 1840-1937.
- Kennedy, J. C. G. (Joseph Camp Griffith), 1813-1887. J.C.G. Kennedy diary. 1851.
- Kennelly, John McRae, 1895-1978. John McRae Kennelly collection 1917-1919.
- Kenneth Lewis Roberts papers, 1919-1956.
- Kenyon L. Butterfield papers, 1889-1970.
- Kermit Roosevelt and Belle Roosevelt papers, 1725-1975.
- Kermit Roosevelt papers.
- Kern collection, 1905-1945.
- Kern, Jerome, 1885-1945. Jerome Kern collection, 1905-1951.
- Key Pittman papers, 1898-1951.
- Kieran, John, 1892-1981. John Kieran papers, 1917-1985.
- King, Judson, 1872-1958. Judson King papers, 1900-1959.
- Kingsbury, John Adams, 1876-1956. John Adams Kingsbury papers, 1841-1966.
- Kirk Munroe papers, 1850-1940.
- Kleine, George. George Kleine papers, 1886-1946.
- Kleine, George. Select papers from the George Kleine film collection.
- Kleine, George. Select papers from the George Kleine film collection, 1886-1946.
- Klemperer, Otto, 1885-1973. Otto Klemperer archive, 1792-1988.
- Kline, Burton, 1877-1958. Burton Kline papers, 1896-1954.
- Klyce, Scudder, 1879-1933. Scudder Klyce papers, 1911-1933.
- Klyce, Scudder, 1879-1933. Universe. 1921.
- Knox, Annie Reid, 1876-1958. Annie Reid Knox papers. 1936-1954.
- Knox, Dudley Wright, 1877-1960. Dudley Wright Knox papers, 1864-1950.
- Knox, Frank, 1874-1944. Frank Knox papers, 1898-1954.
- Knox, Katharine McCook. Katharine McCook Knox papers, 1802-1975.
- Knox, Philander C. (Philander Chase), 1853-1921. Philander C. Knox papers, 1796-1922.
- Kolisch, Rudolf, 1896-1978. Rudolf Kolisch collection, 1921-1943.
- Koller, Carl, 1857-1944. Carl Koller papers, 1866-1988.
- Königliche Preussische Messbildanstalt collection (Library of Congress).
- Korson, George Gershon, 1899-1967. Coal dust on the fiddle; songs and stories of the bituminous industry.
- Korson, George Gershon, 1899-1967. George Korson collection, 1913-1975.
- Kortschak, Hugo, 1884-1957. Hugo Kortschak correspondence and photographs, 1904-1950.
- Kostelanetz, Andre, 1901-1980. Andre Kostelanetz collection, 1922-1984.
- Koszarski, Richard. Richard Koszarski collection of research material on the early history of Universal Pictures Corporation, 1906-1996.
- Koussevitzky archive 1880-1978.
- Koussevitzky, Serge, 1874-1951. Serge Koussevitzky archive, 1880-1978.
- Krafchik, Jennifer. Jennifer Krafchik papers.
- Kreisler collection, 1845-1969.
- Kreisler, Fritz, 1875-1962. Fritz Kreisler collection, 1845-1969.
- Krueger, Karl, 1894-1979. Society for the Preservation of the American Musical Heritage collection, 1792-1969.
- Kruger, Louis M., 1861-1934. Louis M. Kruger performance library, 1879-1919.
- Kubie, Lawrence S. (Lawrence Schlesinger), 1896-1973. Lawrence S. Kubie papers, 1916-1978.
- Kunz, George Frederick, 1856-1932. George Frederick Kunz papers, 1783-1930.
- KWKH (Radio station : Shreveport, La.). Louisiana hayride collection, 1904-2006.
L
- La Follette, Belle Case, 1859-1931. Belle Case La Follette papers. 1879-1931.
- La Follette family. La Follette family papers, 1781-1988.
- La Follette family papers, 1781-1988.
- La Follette, Fola, 1882-1970. Fola La Follette papers. 1879-1970.
- La Follette, Mary Josephine, 1899-1988. Mary Josephine La Follette papers. 1925-1988.
- La Follette, Philip Fox, 1897-1965. Philip Fox La Follette papers. 1911-1971.
- La Follette, Robert M. (Robert Marion), 1855-1925. Robert M. La Follette papers. 1844-1925.
- La Follette, Robert M. (Robert Marion), 1895-1953. Robert M. La Follette papers. 1895-1960.
- La Motte, Ellen N. (Ellen Newbold), 1873-1961. Ellen N. La Motte collection on opium traffic, 1919-1933.
- Lafayette, Marie Joseph Paul Yves Roch Gilbert Du Motier, marquis de, 1757-1834. Marie Joseph Paul Yves Roch Gilbert Du Motier, marquis de Lafayette, papers, 1776-1934.
- Lamont, Daniel Scott, 1851-1905. Daniel Scott Lamont papers, 1853-1928.
- Lamson-Scribner, F. F. Lamson-Scribner papers, 1885-1938.
- Land, Emory Scott, 1879-1971. Emory Scott Land papers, 1901-1972.
- Landowska, Wanda. Wanda Landowska and Denise Restout papers, 1843-2002.
- Lane, J. F., active 1834-1835. J.F. Lane letterbook. 1834-1835.
- Langelan, Martha J. Martha J. Langelan papers.
- Langmuir, Irving, 1881-1957. Irving Langmuir papers, 1871-1957.
- Lansing, Robert, 1864-1928. Robert Lansing papers, 1831-1959.
- Larson family papers.
- Larson, Frans August, 1870-1957. Frans August Larson family papers, 1864-2021.
- Larson, Frans August, 1870-1957. Frans August Larson papers.
- Larson, Mary Rodgers, 1869-1947. Mary Rodgers Larson papers.
- Lathrop, William Addison. William Addison Lathrop papers.
- Laughlin, J. Laurence (James Laurence), 1850-1933. J. Laurence Laughlin papers, 1902-1931.
- Laura Wood Roper map collection.
- Laura Wood Roper papers, 1822-1982.
- Lauro Ayestarán collection, 1830-1966.
- Lavender, Robert A., 1889-1976. Robert A. Lavender papers, 1911-1976.
- Lawrence, D. H. (David Herbert), 1885-1930. D.H. Lawrence correspondence, notes, and photographs, 1921-1930.
- Lawrence, Dorothea Dix, 1899-1979. Dorothea Dix Lawrence collection, 1856-1980.
- Lawrence S. Kubie papers, 1916-1978.
- Lawrence Van Buren family papers, 1721-1938.
- Lawrie, Lee, 1877-1963. Lee Lawrie papers, 1908-1990.
- Lawton, Henry Ware, 1843-1899. Henry Ware Lawton papers, 1849-1930.
- Layton family papers.
- Layton family. Pierson, Rioch, and Layton families papers, 1777-2012.
- LC archives.
- Le Gallienne, Eva, 1899-1991. Eva Le Gallienne papers, 1823-1997.
- Le Gallienne, Julie Nørregaard, 1863-1942. Julie Nørregaard Le Gallienne papers.
- Le Gallienne, Richard, 1866-1947. Richard Le Gallienne papers.
- Le Garrec, Mary Virginia Foreman. Mary Virginia Foreman Le Garrec collection on Artur Schnabel, 1893-1996.
- League of Composers (U.S.). Modern Music archives, 1909-1983.
- League of Nations. Advisory Committee on Traffic in Opium and Other Dangerous Drugs. League of Nations. Advisory Committee on Traffic in Opium and Other Dangerous Drugs records.
- League of Women Voters records, 1884-1986.
- League of Women Voters (U.S.). League of Women Voters records, 1884-1986.
- Learned Hand papers.
- Learned Hand trial summaries, 1909-1924.
- Learned, Henry Barrett, 1868-1931. Henry Barrett Learned papers, 1907-1931.
- Leason Heberling Adams papers, 1919-1968.
- Lee, Ann Hill Carter, 1773-1829. Ann Hill Carter Lee papers.
- Lee, Anne Robinson McCarty, 1798-1840. Anne Robinson McCarty Lee papers.
- Lee, Charles Carter, 1798-1871. Charles Carter Lee papers.
- Lee de Forest papers, 1884-1955.
- Lee, Elizabeth Collins, -1858. Elizabeth Collins Lee papers.
- Lee family. Ethel Armes collection of Lee family papers, 1671-1936.
- Lee family papers.
- Lee, Francis Watts. Francis Watts Lee papers, 1845-1951.
- Lee, Henry, 1756-1818. Henry Lee papers.
- Lee, Henry, 1787-1837. Henry Lee papers.
- Lee Lawrie papers, 1908-1990.
- Lee, Mary Randolph Custis, 1807-1873. Mary Randolph Custis Lee papers.
- Lee, Richard Bland, 1761-1827. Richard Bland Lee papers.
- Lee, Richard Henry, 1794-1865. Richard Henry Lee papers.
- Lee, Robert E. (Robert Edward), 1807-1870. Robert E. Lee papers.
- Lee, Rowland V., 1891-1975. Rowland V. Lee papers, 1907-1971.
- Lee Strasberg papers, 1780-2006.
- Lee, Thomas, 1690-1750. Thomas Lee papers.
- Leffingwell, R. C. (Russell Cornell), 1878-1960. R.C. Leffingwell letterbooks, 1917-1920.
- Leichtentritt, Hugo, 1874-1951. Hugo Leichtentritt papers, 1888-1972.
- Leighton W. Rogers papers, 1912-1982.
- Leighton William Rogers papers.
- Lejeune, John Archer, 1867-1942. John Archer Lejeune papers, 1815-1950.
- Leland, Charles Godfrey, 1824-1903. Charles Godfrey Leland papers.
- Leland Harrison papers, 1915-1947.
- Leland, Waldo Gifford, 1879-1966. Guide to materials for American history in the libraries and archives of Paris.
- Leland, Waldo Gifford, 1879-1966. Waldo Gifford Leland papers, 1844-1966.
- Lennard H. Mitchell diaries, 1914.
- Lennard H. Mitchell papers.
- Lenroot, Clara Clough, 1856-1942. Clara Clough Lenroot papers.
- Lenroot, Irvine Luther, 1869-1949. Irvine Luther Lenroot papers, 1858-1971.
- Leo Feist collection, 1880-1930.
- Leo Joseph Bailey collection 1917-2008.
- Leo Wolman papers, 1870-1958.
- Leon F. Barnard papers, 1901-circa 1993.
- Leon Hilsberg collection, 1906-1941.
- Leon Hilsberg papers.
- Leonard B. Smith papers, 1859-2001.
- Leonard, John Calvin, 1859-1937. John Calvin Leonard papers, 1882-1920.
- Leonard Porter Ayres papers, 1902-1946.
- Leonard Wood papers, 1825-1942.
- Leonora Jackson McKim papers, 1854-1969.
- Leontiĭ, Metropolitan of All America and Canada, 1876-1965. Leontiĭ, Metropolitan of All America and Canada, papers, 1855-1962.
- Leontiĭ, Metropolitan of All America and Canada, papers, 1855-1962.
- Lepman, Harry, 1904-1970. Harry and Sara Lepman collection, 1890-1945.
- LeRoy Feay Thompson collection 1918-2011.
- Lester F. Ward papers.
- Lester Frank Ward papers, 1883-1906.
- Lester Hood Woolsey papers, 1831-1958.
- Levy, Fanny Yates, 1787-1891 or 1892. Fanny Yates Levy papers.
- Levy, Jacob Clavius, 1788-1875. Jacob Clavius Levy papers.
- Lewis, Ernest Irving, 1873-1947. Ernest Irving Lewis papers, 1897-1944.
- Lewis M. Haupt papers, 1849-1923.
- Lewis Nathaniel Chase papers, 1836-1947.
- Lewis, Nolan D. C. (Nolan Don Carpentier), 1889-1979. Nolan D.C. Lewis papers, 1897-1978.
- Lewis Whitfield Colson papers, 1894-1950.
- Lewis, William A., 1867 or 1868- William A. Lewis journal. 1923.
- Libby, Abial. Abial Libby diary. 1862.
- Libby, Frederick J. (Frederick Joseph), 1874-1970. Frederick Joseph Libby papers, 1846-1973.
- Liberati, Allesandro, 1847-1927. Allesandro and Speranza Liberati papers, 1880-1947.
- Liberia map collection, 1764-1970.
- Library of Congress archives, 1800-2015.
- Library of Congress archives, Building and Grounds Division series.
- Library of Congress archives, Consultants and Fellows series.
- Library of Congress archives, Exchange and Gift Division series.
- Library of Congress archives, Order Division series.
- Library of Congress archives, Photographs, Illustrations, and Objects series.
- Library of Congress. Building and Grounds Division. Building and Grounds Division series, Library of Congress archives, 1871-1954.
- Library of Congress. Building and Grounds Division. Library of Congress. Building and Grounds Division records.
- Library of Congress. Elizabeth Sprague Coolidge Foundation. Elizabeth Sprague Coolidge Foundation collection. 1894-1953.
- Library of Congress. Exchange and Gift Division. Exchange and Gift Division series, Library of Congress archives, 1893-1979.
- Library of Congress. Exchange and Gift Division. Library of Congress. Exchange and Gift Division records.
- Library of Congress. Foreign Copying Program. Library of Congress. Foreign Copying Program reproductions collection.
- Library of Congress. Library of Congress archives. (11)
- Library of Congress. Library of Congress archives, 1800-2015.
- Library of Congress. Manuscript Division. Suffrage Archives. 1759-1961. (2)
- Library of Congress. Music Division. Vaudeville and minstrel photograph collection, circa 1910s-1940.
- Library of Congress. National Audio-Visual Conservation Center. Motion picture copyright descriptions collection. Class L, 1912-1977.
- Library of Congress. National Audio-Visual Conservation Center. Motion picture copyright descriptions collection. Class M, 1912-1977.
- Library of Congress. Office of the Superintendent of Library Building and Grounds. Library of Congress. Office of the Superintendent of Library Building and Grounds records.
- Library of Congress. Order Division. Library of Congress. Order Division records.
- Library of Congress. Order Division. Order Division series, Library of Congress archives, 1898-1991.
- Library of Congress records.
- Lillian Gish papers, 1829-1978.
- Lincoln, Abraham, 1809-1865. Abraham Lincoln correspondence. 1864 July 9.
- Lincoln, Abraham, 1809-1865. Abraham Lincoln papers, 1774-1948.
- Lincoln, Abraham, 1809-1865. Abraham Lincoln papers. 1824-1865.
- Lincoln, Abraham, 1809-1865. Abraham Lincoln papers. 1861-1865.
- Lincoln, Abraham, 1809-1865. Robert Todd Lincoln family papers. 1864-1938.
- Lincoln family papers.
- Lincoln family. Robert Todd Lincoln family papers, 1864-1938.
- Lincoln, Mary Todd, 1818-1882. Robert Todd Lincoln family papers. 1864-1938.
- Lincoln, Robert Todd, 1843-1926. Robert Todd Lincoln family papers, 1864-1938.
- Lind, Olof E., 1889-1971. Olof E. Lind papers, 1713-1996.
- Lindsey, Ben B. (Ben Barr), 1869-1943. Ben B. Lindsey papers, 1838-1957.
- Lispenard Seabury Crocker papers.
- Literary Society of Washington (Washington, D.C.). Literary Society of Washington, Washington, D.C., records, 1873-1991.
- Literary Society of Washington, Washington, D.C., records, 1873-1991.
- Little, Arthur D. (Arthur Dehon), 1863-1935. Arthur D. Little papers, 1884-1973.
- Littlewood, William H. William H. Littlewood map collection.
- Livermore, Eunice. Eunice Livermore papers.
- Livermore, Isaac. Isaac Livermore papers.
- Livingston, Anne Home Shippen, 1763-1841. Anne Home Shippen Livingston papers. (2)
- Lloyd Carpenter Griscom papers, 1898-1951.
- Loeb, Jacques, 1859-1924. Forced movements, tropisms, and animal conduct. 1918.
- Loeb, Jacques, 1859-1924. Jacques Loeb papers, 1889-1924.
- Loeb, Jacques, 1859-1924. Proteins and the theory of colloidal behavior. 1922.
- Loeb, Jacques, 1859-1924. Regeneration from a physico-chemical viewpoint. 1924.
- Loening, Grover, 1888-1976. Grover Cleveland Loening papers, 1900-1975.
- Logan family. John Alexander Logan family papers, 1836-1925.
- Logan, John A., Jr., 1865-1899. John Alexander Logan papers.
- Logan, John A., Mrs., 1838-1923. Mrs. John A. Logan papers.
- Logan, John Alexander, 1826-1886. John Alexander Logan family papers, 1836-1925.
- Logan Pearsall Smith papers, 1760-1946.
- Loines, Mary Hillard, 1844-1944. Mary Hillard Loines papers.
- Loines, Russell Hillard. Russell Hillard Loines papers.
- Long, Breckinridge, 1881-1958. Breckinridge Long papers, 1486-1948.
- Longworth, Alice Roosevelt, 1884-1980. Alice Roosevelt Longworth papers, 1888-1942.
- Longworth, Nicholas, 1869-1931. Nicholas Longworth papers, 1782-1931.
- Look, Richard M. (Richard Millard), 1916-1998. Richard M. Look map collection.
- Lopatnikoff, Nikolai, 1903-1976. Nikolai Lopatnikoff collection, 1916-1979.
- Loper family. Palmer-Loper family papers, 1667-1994.
- Loper, R. F. (Richard F.) R.F. Loper papers.
- Lorand, Sándor, 1892-1987. Sándor Lorand papers, 1914-1978.
- Lorenz, Jennie, 1886-1962. Jennie Lorenz collection relating to Charlotte Cushman, 1830-1960.
- Lorge, Irving, 1905-1961. Semantic count of English words. 1938.
- Lorimer, George Horace, 1869-1937. George Horace Lorimer correspondence.
- Loth, Carl Conrad, 1896-1967. Carl Conrad Loth papers, 1896-1967.
- Lou Herscher music manuscripts, 1896-1968.
- Loudenbeck, Edward Henry, 1895-1972. Edward Henry Loudenbeck collection, 1917-1919.
- Louis F. Post papers, 1864-1940.
- Louis M. Kruger performance library, 1879-1919.
- Louis Milton Ronsheim collection, 1914-2000.
- Louis-Pierre Mouillard papers, 1833-1987.
- Louis Skidmore papers, 1908-1976.
- Louis T. Michener papers, 1880-1927.
- Louis Theodore Michener papers.
- Louis Untermeyer papers.
- Louise Chandler Moulton papers, 1852-1908.
- Louise Imogen Guiney papers, 1884-1920.
- Louise Talma collection, 1861-1998.
- Louise Talma papers, 1861-1998.
- Louisiana hayride collection, 1904-2006.
- Low, Abiel Abbot, 1811-1893. Abiel Abbot Low papers.
- Low, Edward Allen, 1817-1898. Edward Allen Low papers.
- Low family. Low-Mills family papers, 1767-1971.
- Low family papers.
- Low-Mills family papers, 1767-1971.
- Lowe, T. S. C. (Thaddeus Sobieski Coulincourt), 1832-1913. Memoirs of Thaddeus S.C. Lowe, chief of the aeronautic corps of the Army of the United States during the Civil War : my balloons in peace and war.
- Lowe, T. S. C. (Thaddeus Sobieski Coulincourt), 1832-1913. T.S.C. Lowe papers.
- Lowenfeld, Margaret, 1890-1973. Margaret Lowenfeld papers.
- Luce, Stephen Bleecker, 1827-1917. Stephen Bleecker Luce papers, 1799-1955.
- Lucius C. Dunn papers, 1902-1957.
- Lucretia Rudolph Garfield papers, 1807-1958.
- Lurton, Horace H. (Horace Harmon), 1844-1914. Horace H. Lurton papers, 1860-1915.
- Luther Burbank papers, 1830-1989.
- Luther R. Ray architectural drawing archive.
- Luther R. Ray archive.
- Lydia Nadejena papers, 1907-1974.
- Lydia S.M. Robinson collection relating to World War I, 1914-1942.
- Lyman Bryson papers, 1893-1978.
- Lyman J. Gage correspondence, 1897-1906.
- Lyman J. Gage papers.
- Lyman Judson Gage papers.
- Lynch, Grace C., approximately 1892-1970. Grace C. Lynch papers. 1905-1965.
- Lynd, Helen Merrell, 1896-1982. Robert Staughton and Helen Merrell Lynd papers. 1895-1968.
- Lynd, Robert Staughton, 1892-1970. Robert Staughton Lynd and Helen Merrell Lynd papers, 1895-1968.
M
- Maas, Charles Oscar, -1919. Charles Oscar Maas map collection, 1920-1997.
- Maas, Charles Oscar. Charles Oscar Maas papers.
- Maass, Charles. Charles Maass papers, 1912-1924.
- Mabel Thorp Boardman papers, 1853-1945.
- Mabel Walker Willebrandt papers, 1881-1978.
- MacDonald, A. B. (Alexander Black), 1871-1942. A.B. MacDonald papers, 1878-1976.
- MacDonald, Malcolm, 1911- Malcolm MacDonald papers.
- MacDonald, Pirie, 1867-1942. Pirie MacDonald photographic collection.
- MacDowell, Edward, 1860-1908. Edward MacDowell papers.
- MacDowell, Marian, 1857-1956. Marian MacDowell papers, 1876-1969.
- MacKinlay Kantor papers, 1885-1998.
- Maclay, Edgar Stanton, 1863-1919. Edgar Stanton Maclay papers, 1782-circa 1918.
- Macomb, Alexander, 1888-1970. Alexander Macomb papers.
- Macomb, Ann Minerva Rodgers, 1824-1916. Ann Minerva Rodgers Macomb papers.
- Macomb, Christina, 1861-1945. Christina Macomb papers.
- Macomb, Nannie, 1864-1952. Nannie Macomb papers.
- MacVeagh, Franklin, 1837-1934. Franklin MacVeagh papers, 1799-1934.
- Mae West papers.
- Mae West play scripts, 1921-1964.
- Magic miscellanea, 1845-1955.
- Mahan, A. T. (Alfred Thayer), 1840-1914. A.T. Mahan papers, 1779-1970.
- Malaney, Curtis L., 1926-1989. Curtis L. Malaney papers, 1923-1989.
- Malina, Frank J. Frank J. Malina papers, 1912-1986.
- Mamoulian, Rouben. Rouben Mamoulian papers, 1740-1987.
- Mann, James R. (James Robert), 1856-1922. James R. Mann papers, 1887-1922.
- Mann, Thomas, 1875-1955. Thomas Mann papers, 1909-1947.
- Mannes - Damrosch collection, 1848-1986.
- Mannes, David, 1866-1959. Mannes - Damrosch collection, 1848-1986.
- Mansfield, Richard, 1857-1907. Paul Wilstach collection of Richard Mansfield papers. 1889-1918.
- Manuscript holdings from the Library of Oliver Wendell Holmes, Jr. : ca. 1450-1935.
- Manuscript Plays Collection, Library of Congress Copyright Office drama deposits, 1863-1973.
- Maps showing entrenchments in France during World War I at a scale of 1:10,000.
- Maps showing entrenchments in France during World War I at a scale of 1:20,000.
- Marburg, Theodore, 1862-1946. Theodore Marburg papers, 1856-1940.
- March, Peyton Conway, 1864-1955. Peyton Conway March map collection. (2)
- March, Peyton Conway, 1864-1955. Peyton Conway March papers.
- March, Peyton Conway, 1864-1955. Peyton Conway March papers, 1897-1955.
- Margaret Mead papers and South Pacific Ethnographic Archives, 1838-1996.
- Margaret Severn papers.
- Maria Montessori lectures, 1913-1917.
- Maria Montessori papers.
- Marian MacDowell papers, 1876-1969.
- Marie Joseph Paul Yves Roch Gilbert Du Motier, marquis de Lafayette, papers, 1776-1934.
- Mario Castelnuovo-Tedesco papers, 1822-1998.
- Mark L. Bristol papers, 1882-1939.
- Mark Sullivan papers, 1900-1935.
- Markham, Edwin, 1852-1940. Edwin Markham papers, circa 1893-1937.
- Markoe, Sophie D. Sophie D. Markoe papers. 1852-1911.
- Marsh, Benjamin Clarke, 1877-1952. Benjamin Clarke Marsh papers, 1910-1950.
- Marshall P. Wilder papers, 1880-1914.
- Marshall Pinckney Wilder papers.
- Marston, Philip Bourke, 1850-1887. Philip Bourke Marston correspondence.
- Marston, Westland, 1819-1890. Westland Marston correspondence.
- Martin, Glenn L. (Glenn Luther), 1886-1956. Glenn L. Martin papers, 1909-1956.
- Martin Oviatt papers, 1863-1995.
- Marvin Breckinridge papers.
- Mary Amanda Dixon Jones papers, 1839-1925.
- Mary Ann Bickerdyke papers, 1847-1905.
- Mary Church Terrell papers, 1851-1962.
- Mary Elizabeth Hallock Greenewalt papers, 1918-1942.
- Mary French Sheldon papers, 1885-1938.
- Mary Marvin Breckinridge Patterson papers, 1846-2003.
- Mary Virginia Foreman Le Garrec collection of Artur Schnabel materials, 1893-1996.
- Mary Virginia Foreman Le Garrec collection on Artur Schnabel, 1893-1996.
- Mason, Charles, 1804-1882. Charles Mason papers.
- Mason family. Charles Mason Remey family papers, 1778-1949.
- Massachusetts Colonization Society. Massachusetts Colonization Society letterbooks. 1856-1875.
- Matteson, David Maydole, 1871-1949. David Maydole Matteson papers, 1876-1937.
- Matthew Stanley Quay papers, 1776-1949.
- Maud Wood Park papers, 1844-1979.
- Maugham, W. Somerset (William Somerset), 1874-1965. W. Somerset Maugham papers, 1897-1966.
- Max Schur papers, 1923-1974.
- Maxwell Anderson papers, 1920-1989.
- May Robson papers, 1849-1955.
- Mayo, Henry T. (Henry Thomas), 1856-1937. Henry T. Mayo papers, 1866-1972.
- McAdoo, Eleanor Wilson, 1889-1967. Eleanor Wilson McAdoo papers. 1911-1950.
- McAdoo family. Wilson-McAdoo families papers, 1860-1966.
- McAdoo, W. G. (William Gibbs), 1863-1941. W.G. McAdoo papers, 1786-1941.
- McAtee, W. L. (Waldo Lee), 1883-1962. W.L. McAtee papers, 1803-1963.
- McClellan, George B. (George Brinton), 1865-1940. George B. McClellan papers, 1838-1922.
- McClure, Charles, 1838-1902. Charles McClure papers. 1849-1926.
- McClure family. Gibson-Getty-McClure families papers, 1777-1926.
- McConnell, Edward F. Edward F. McConnell papers.
- McConnell family. Pike-McConnell-Donaldson family papers, 1770-1967.
- McConnell, James S. James S. McConnell papers.
- McConnell's Economic Surveys collection.
- McConnell's Economic Surveys (Los Angeles, Calif.). McConnell's Economic Surveys collection.
- McCormick family. Hanna-McCormick family papers, 1792-1985.
- McCormick, Ken, 1906-1997. Ken McCormick collection of Doubleday and Company, inc., records. 1882-1992.
- McCormick, Medill, 1877-1925. Medill McCormick papers.
- McCoy, Frank Ross, 1874-1954. Frank Ross McCoy papers, 1847-1957.
- McCrea, Grace. Grace McCrea papers relating to Denishawn, 1913-1969.
- McCrea, John L. (John Livingstone), 1891-1990. John L. McCrea papers, 1898-1984.
- McElroy, Robert McNutt, 1872-1959. Robert McNutt McElroy papers, circa 1909-1924.
- McGee, Anita Newcomb, 1864-1940. Anita Newcomb McGee papers, 1688-1932.
- McGee, W J, 1853-1912. W J McGee papers, 1880-1916.
- McGlinn, John. John McGlinn collection, 1890s-2010.
- McGowan, Samuel, 1870-1934. Samuel McGowan papers, 1883-1943.
- McKelway, Alexander Jeffrey, 1866-1918. Alexander Jeffrey McKelway papers, 1814-1942.
- McKenney, Flannery & Craighill. McKenney, Flannery & Craighill records.
- McKim, Charles Follen, 1847-1909. Charles Follen McKim papers, 1838-1929.
- McKim collection, 1899-1991.
- McKim, Leonora Jackson, 1879-1969. Leonora Jackson McKim papers, 1854-1969.
- McKim (Leonora Jackson and William Duncan McKim) collection.
- McKinlay, Whitefield, 1852-1941. Whitefield McKinlay papers. 1848-1913.
- McKinley, William, 1843-1901. William McKinley map collection.
- McKinley, William, 1843-1901. William McKinley map collection, 1890-1906.
- McKinley, William, 1843-1901. William McKinley papers.
- McKinley, William, 1843-1901. William McKinley papers, circa 1847-1935.
- McKinley, William Brown, 1856-1926. William Brown McKinley papers.
- McLain, William. William McLain papers. 1831-1850.
- McLean, Evalyn Walsh, 1886-1947. Evalyn Walsh McLean papers, 1874-1948.
- McLean, Evalyn Walsh, 1886-1947. Father struck it rich. 1936.
- McLeod, Norman Z., 1898-1964. Norman Z. McLeod papers.
- McManus-Young clipping collection of materials on magic, 1870-1955.
- McNary, Charles Linza, 1874-1944. Charles Linza McNary papers, 1921-1944.
- McNeill, Bertha C. (Bertha Clay), 1887-1979. Bertha C. McNeill papers. 1906-1979.
- McNeill family papers.
- McNeill family. Robert H. McNeill family papers, 1839-2008.
- McNeill, Mary A. (Mary Alice), 1883-1959. Mary A. McNeill papers. 1839-1959.
- McNeill, Robert H., 1917-2005. Robert H. McNeill family collection.
- McNeill, Robert H., 1917-2005. Robert H. McNeill family papers, 1839-2008.
- McNeill, William C. (William Clarence), 1878-1964. William C. McNeill papers. 1868-1964.
- McPherson, Bessie. Bessie McPherson papers. 1882-1936.
- Mead, Margaret, 1901-1978. Margaret Mead papers and South Pacific Ethnographic Archives, 1838-1996.
- Mearns, Edgar Alexander, 1856-1916. Edgar Alexander Mearns papers, 1864-1918.
- Medtner, Nikolay Karlovich, 1880-1951. Nikolay Karlovich Medtner papers, 1826-1954.
- Meier, Nellie Simmons, -1939. Nellie Simmons Meier papers, 1898-1938.
- Meigs, John Forsyth, 1848-1924. John Forsyth Meigs papers, 1914-1940.
- Meigs, Merrill C. (Merrill Church), 1883-1968. Merrill C. Meigs diary.
- Meigs, Return Jonathan, 1740-1823. Return Jonathan Meigs papers.
- Meigs, Return Jonathan, 1764-1825. Return Jonathan Meigs papers.
- Melville Weston Fuller papers, 1794-1949.
- Mercer Green Johnston papers, 1860-1954.
- Mercy-Argenteau family papers, 1410-1921.
- Mercy family. Mercy-Argenteau family papers, 1410-1921.
- Mercy family papers.
- Merriam, C. Hart (Clinton Hart), 1855-1942. C. Hart Merriam papers, 1864-1938.
- Merriam, John C. (John Campbell), 1869-1945. John C. Merriam papers, 1899-1938.
- Merrill, George P. (George Perkins), 1854-1929. George P. Merrill correspondence and autographs, 1803-1926.
- Mestre, José Manuel, 1832-1886. José Manuel Mestre papers. circa 1860-1870.
- Mexican Revolution newspaper clippings archive, 1911-1913.
- Meyer, Agnes E., 1887-1970. Agnes Elizabeth Ernst Meyer papers, 1853-2010.
- Meyer, Eugene, 1875-1959. Eugene Meyer papers, 1864-1975.
- Meyer, George von Lengerke, 1858-1918. George von Lengerke Meyer papers, 1900-1917.
- Michener, Louis T. (Louis Theodore), 1848-1928. Louis T. Michener papers, 1880-1927.
- Middleton, George, 1880-1967. George Middleton papers, 1872-1970.
- Miles-Cameron families correspondence, 1661-1956.
- Miles-Cameron families papers.
- Miles family. Miles-Cameron families correspondence, 1661-1956.
- Miles family papers.
- Miles, Nelson Appleton, 1839-1925. Miles-Cameron families correspondence, 1661-1956.
- Millay, Cora Buzzell. Cora Buzzell Millay papers.
- Millay, Edna St. Vincent, 1892-1950. Edna St. Vincent Millay papers, 1830-2013.
- Millay, Norma. Norma Millay papers.
- Miller, Adolph Caspar, 1866-1953. Adolph Caspar Miller papers, 1913-1947.
- Miller, Charles, approximately 1883-1979. Charles Miller collection of music manuscripts, 1924-1945.
- Miller, Cyrus Robinson, 1874-1947. Cyrus Robinson Miller papers, 1897-1940.
- Miller, Ewing Harry, 1890-1923. Ewing Harry Miller collection, 1917-1923.
- Mills family. Low-Mills family papers, 1767-1971.
- Mills family papers.
- Milton, George Fort, 1894-1955. George Fort Milton papers, 1828-1985.
- Minnie Maddern Fiske and Harrison Grey Fiske papers, 1818-1955.
- Minnie Maddern Fiske papers.
- Mira Lloyd Dock papers, 1814-1951.
- Miscellaneous papers in the Sigmund Freud collection, 1866-1983.
- Mitchel, John Purroy, 1879-1918. John Purroy Mitchel papers, 1835-1932.
- Mitchell, Antoinette Brooks, 1892-1972. Antoinette Brooks Mitchell papers. 1894-1974.
- Mitchell, Lennard H. (Lennard Harris), 1881-1944. Lennard H. Mitchell diaries, 1914.
- Mitchell, Louis A., 1885-1957. Louis A. Mitchell papers. 1894-1974.
- Mitchell, Louis A., 1914-1972. Louis A. Mitchell papers. 1912-1972.
- Mitchell, Samuel Chiles, 1864-1948. Samuel Chiles Mitchell papers, 1903-1913.
- Mitchell, Samuel Chiles, 1864-1948. Unpublished biography of Robert C. Ogden.
- Mitchell, William, 1879-1936. General William Mitchell papers, 1888-1946.
- Modern Music archives, 1909-1983.
- Moldenhauer archives at the Library of Congress, circa 1000-circa 1990.
- Moldenhauer, Hans. Moldenhauer archives at the Library of Congress, circa 1000-circa 1990.
- Monday, Henry Albert, 1876-1942. Henry Albert Monday collection relating to Mexico, 1522-1935.
- Montessori, Maria, 1870-1952. Maria Montessori lectures, 1913-1917.
- Montgomery, Benjamin T. (Benjamin Thornton), 1819-1877. Benjamin T. Montgomery family papers, 1872-1987.
- Montgomery, Emily Redington, 1839-1898. Emily Redington Montgomery papers.
- Montgomery family. Benjamin T. Montgomery family papers, 1872-1987.
- Montgomery family. Montgomery family papers, 1771-1974.
- Montgomery family papers.
- Montgomery family papers, 1771-1974.
- Montgomery, George Redington, 1870-1945. George Redington Montgomery papers.
- Montgomery, Giles Foster, 1835-1888. Giles Foster Montgomery papers.
- Montgomery, Marshall Hugh, 1909-2000. Marshall Hugh Montgomery papers.
- Montgomery Meigs Taylor papers, 1890-1935.
- Moody, William H. (William Henry), 1853-1917. William H. Moody papers, 1879-1916.
- Moody, William H. (William Henry), 1853-1917. William H. Moody papers. 1906-1910.
- Moon, John Austin, 1855-1921. John Austin Moon papers, 1832-1921.
- Moore, Charles, 1855-1942. Charles Moore papers, 1848-1944.
- Moore, John Bassett, 1860-1947. John Bassett Moore papers, 1866-1949.
- Moore, Joseph Arthur, 1879-1937. Joseph Arthur Moore papers, 1910-1927.
- Moorfield Storey papers, 1876-1929.
- Moral Re-armament (Organization) Moral Re-armament records.
- Moral Re-armament (Organization). Moral Re-armament records, 1812-1991.
- Moral Re-armament (Organization). Visual materials from the Moral Re-armament records.
- Moral Re-armament records, 1812-1991.
- Moreton Frewen papers, 1823-1934.
- Morgan, John Tyler, 1824-1907. John Tyler Morgan papers, 1840-1907.
- Morgenthau, Henry, 1856-1946. Henry Morgenthau papers, 1795-1941.
- Morris, Arthur J., 1881-1973. Arthur J. Morris papers, 1888-1976.
- Morris dance photograph collection.
- Morris, Roland S. (Roland Sletor), 1874-1945. Roland S. Morris papers, 1910-1943.
- Morris, William Sylvanus, 1888-1947 William Sylvanus Morris collection, 1917-2016.
- Morrisson, Mary Foulke. Mary Foulke Morrisson scrapbooks.
- Morton L. Deyo papers, 1911-1981.
- Moseley, George Van Horn, 1874-1960. George Van Horn Moseley papers, 1855-1960.
- Moseley, George Van Horn, 1874-1960. One soldier's journey.
- Moss, George H. George H. Moss collection of sheet music, 1885-1935.
- Motion picture copyright descriptions collection. Class L, 1912-1977.
- Motion picture copyright descriptions collection. Class M, 1912-1977.
- Mouillard, Louis-Pierre, 1834-1897. Louis-Pierre Mouillard papers, 1833-1987.
- Moulton, Louise Chandler, 1835-1908. Louise Chandler Moulton papers, 1852-1908.
- Mount Rushmore National Memorial Commission. Mount Rushmore National Memorial Commission records. 1920-1941.
- Mulford, Clarence Edward, 1883-1956. Clarence Edward Mulford papers, 1921-1936.
- Mullett & Co. architectural drawing archive (Library of Congress).
- Mullett & Co. collection.
- Munroe, Kirk, 1850-1930. Kirk Munroe papers, 1850-1940.
- Munroe, Mabel Stearns. Mabel Stearns Munroe papers.
- Munroe, Mary Barr. Mary Barr Munroe papers.
- Murdock, Marcellus M. (Marcellus Marion), 1883-1970. Marcellus M. Murdock papers. 1903-1943.
- Murdock, Marshall M. (Marshall Mortimer), 1837-1908. Marshall M. Murdock papers. 1863-1904.
- Murdock, Victor. Victor Murdock papers, 1824-1971.
- Muriel H. Parry map collection.
- Murray, George D., 1886-1956. George D. Murray papers, 1916-1956.
- Music of John Philip Sousa and Victor Grabel.
- Music of the Sousa Band and Victor Grabel, 1861-1954.
- Mustin, Henry Croskey, 1874-1923. Henry Croskey Mustin papers, 1886-1924.
N
- NAACP records.
- Nadejena, Lydia, 1892?-1977. Lydia Nadejena papers, 1907-1974.
- Naseef family. Naseef-Page family papers, 1880-1936.
- Naseef family papers.
- Naseef-Page family papers, 1880-1936.
- Nathan Appleton papers, 1850-1904.
- Nathan Sargent papers, 1866-1957.
- Nathaniel Sisson papers, 1838-1932.
- Nathaniel Wright family papers, 1787-1917.
- National American Woman Suffrage Association. League of Women Voters. National American Woman Suffrage Association. League of Women Voters records.
- National American Woman Suffrage Association. National American Woman Suffrage Association records, 1839-1961.
- National American Woman Suffrage Association records, 1839-1961.
- National Association for the Advancement of Colored People, compiler. National Association for the Advancement of Colored People map collection.
- National Association for the Advancement of Colored People. National Association for the Advancement of Colored People records, 1842-2019.
- National Association for the Advancement of Colored People records, 1842-2019.
- National Association for the Advancement of Colored People. Washington Bureau. National Association for the Advancement of Colored People. Washington Bureau records. 1914-1993.
- National Association for Universal Military Training. National Association for Universal Military Training records, 1909-1933.
- National Association for Universal Military Training records, 1909-1933.
- National Biographical Society (Washington, D.C.) National Biographical Society (Washington, D.C.) records.
- National Broadcasting Company history files, 1922-1986.
- National Broadcasting Company. National Broadcasting Company history files, 1922-1986.
- National Broadcasting Company press releases. Part I, 1924-1950.
- National Child Labor Committee (U.S.). National Child Labor Committee (U.S.) records, 1904-1953.
- National Child Labor Committee (U.S.) records, 1904-1953.
- National Civic Federation. Woman's Department. District of Columbia Section. Charlotte Everett Hopkins collection of National Civic Federation. Woman's Department. District of Columbia Section records. 1900-1926.
- National Civic Federation. Woman's Department. District of Columbia Section. National Civic Federation. Woman's Department. District of Columbia Section records. 1900-1926.
- National Committee on Federal Aid to Education. National Committee on Federal Aid to Education records.
- National Consumers' League. National Consumers' League records, 1882-2003.
- National Consumers' League records, 1882-2003.
- National League of Women Voters (U.S.) National League of Women Voters (U.S.) records.
- National Photo Company collection.
- National Photo Company. National Photo Company collection.
- National Progressive Republican League. National Progressive Republican League records. 1911-1912.
- National Woman's Party. National Woman's Party records.
- National Woman's Party. National Woman's Party records, 1850-2022.
- National Woman's Party records, 1850-2022.
- National Woman's Party. Visual materials from the National Woman's Party records.
- National Women's Trade Union League of America. National Women's Trade Union League of America records, 1903-1950.
- National Women's Trade Union League of America records, 1903-1950.
- Nazi party and other early 20th century German history related posters.
- Nazimova, 1879-1945. Nazimova collection, 1877-1988.
- Nazimova collection, 1877-1988.
- Nazimova papers.
- NBC press releases. Part I, 1924-1950.
- Nellie Simmons Meier papers, 1898-1938.
- Nelson Appleton Miles papers.
- Nelson T. Johnson papers, 1916-1955.
- Nelson W. Aldrich papers, 1777-1930.
- Nelson W. Jordan family papers, circa 1864-2003.
- Nepomuceno, Alberto, 1864-1920. Abul.
- Nepomuceno, Alberto, 1864-1920. Alberto Nepomuceno collection, 1887-1988.
- Nepomuceno, Alberto, 1864-1920. Artemis.
- Nepomuceno, Alberto, 1864-1920. Peças líricas.
- Nepomuceno, Alberto, 1864-1920. Quartets, violins (2), viola, cello, no. 1, B minor.
- Nepomuceno, Alberto, 1864-1920. Quartets, violins (2), viola, cello, no. 2, G minor.
- Nepomuceno, Alberto, 1864-1920. Quartets, violins (2), viola, cello, no. 3, D minor.
- Nepomuceno, Alberto, 1864-1920. Série brasileira.
- Nepomuceno, Alberto, 1864-1920. Suite antiga.
- Nevin, Wilberforce, -1899. Wilberforce Nevin letterbook. 1861-1864.
- New York Society for the Suppression of Vice. New York Society for the Suppression of Vice records, 1871-1953.
- New York Society for the Suppression of Vice records, 1871-1953.
- New York World-Telegram and the Sun newspaper photograph collection (Library of Congress). (3)
- Newcomb, Simon, 1835-1909. Simon Newcomb papers, 1813-1949.
- Newell, Frederick Haynes, 1862-1932. Frederick Haynes Newell papers, 1885-1931.
- Newman I. White papers, 1812-1929.
- Newton Diehl Baker papers, 1896-1962.
- Nicaraguan Canal Commission (U.S.) Nicaraguan Canal Commission (U.S.) records.
- Nicholas Longworth papers, 1782-1931.
- Nichols, Jeannette Paddock, 1890-1982. Jeannette Paddock Nichols biographer's papers. 1860-1930.
- Nicholson, Augustus S., 1830-1911. Augustus S. Nicholson papers, 1861-1934.
- Nicholson, Joseph Hopper, 1770-1817. Joseph Hopper Nicholson papers.
- Nicholson, Joseph, Jr., -1786. Joseph Nicholson Jr. papers.
- Nicholson, Rebecca Lloyd, 1771-1847. Rebecca Lloyd Nicholson papers.
- Nicolas Slonimsky collection, 1873-1997.
- Nicolay, Helen, 1866-1954. Helen Nicolay papers.
- Nicolay, John G. (John George), 1832-1901. John G. Nicolay papers, 1811-1943.
- Niehaus, Earl F. Earl F. Niehaus thesis. 1955.
- Nielsen, Fred Kenelm, 1879-1963. Fred Kenelm Nielsen papers, 1881-1961.
- Nijinska, Bronislava, 1891-1972. Bronislava Nijinska collection, circa 1740-1996.
- Nikola Tesla correspondence, 1890-1934.
- Nikola Tesla papers.
- Nikolai Lopatnikoff collection, 1916-1979.
- Nikolay Karlovich Medtner papers, 1826-1954.
- Noel Deisch papers, 1910-1937.
- Nolan D.C. Lewis papers, 1897-1978.
- Norbert Hilsberg collection.
- Norman H. Davis papers, 1898-1979.
- Norman Hapgood and Elizabeth Reynolds Hapgood papers, 1824-1977.
- Norris, George W. (George William), 1861-1944. George W. Norris papers, 1864-1954.
- North American Review correspondence, 1858-1912.
- North American Review papers.
- North, Gary W. Gary W. North map collection.
- Norton, Reuben S. Reuben S. Norton papers.
- Novotný, Antonín, 1891-1978. Antonín Novotný papers, 1848-1966.
- NSDAP posters from the "Kampfzeit".
- NYWT&S collection (Library of Congress). (3)
O
- O'Connor, William Douglas, 1832-1889. William Douglas O'Connor papers.
- O'Hara, Eliot, 1890-1969. Eliot O'Hara correspondence.
- O'Hara, Shirley Putnam, 1886- Shirley Putnam O'Hara correspondence and diaries.
- O'Laughlin, John Callan, 1873-1949. John Callan O'Laughlin papers, 1895-1949.
- O'Neil, Charles, 1842-1927. Charles O'Neil papers, 1833-1927.
- O'Reilly, Alejandro, 1725-1794. Alejandro O'Reilly manuscript volume.
- Oberholser, Harry C. (Harry Church), 1870-1963. Harry C. Oberholser papers, 1856-1960.
- Octave Chanute papers, 1807-1955.
- Ogata, Kenje, 1919-2012. Kenje Ogata collection, 1924-2002, 2008, 2011.
- Ogden, Robert C. (Robert Curtis), 1836-1913. Robert C. Ogden papers, 1843-1913.
- Ogle, Dora G. Dora G. Ogle papers.
- Oldberg, Arne, 1874-1962. Arne Oldberg collection, circa 1887-1962.
- Oliver Ellsworth family papers, 1762-1907.
- Oliver Freud and Henny Fuchs Freud papers, 1821-1993.
- Oliver Freud papers.
- Oliver Wendell Holmes papers, 1837-1931.
- Olmsted Associates. Olmsted Associates records.
- Olmsted Associates. Olmsted Associates records, 1863-1971.
- Olmsted Associates records, 1863-1971.
- Olmsted Brothers. Olmsted Brothers records. (2)
- Olmsted, Frederick Law, 1822-1903. Frederick Law Olmsted papers. (2)
- Olmsted, Frederick Law, 1822-1903. Frederick Law Olmsted papers, 1777-1952.
- Olmsted, Frederick Law, 1870-1957. Frederick Law Olmsted papers.
- Olmsted, Gideon, 1749-1845. Gideon Olmsted papers.
- Olmsted, John, 1791-1873. John Olmsted papers.
- Olmsted, John Charles, 1852-1920. John Charles Olmsted papers.
- Olmsted, Olmsted, and Eliot. Olmsted, Olmsted, and Eliot records. (2)
- Olney, Richard, 1835-1917. Richard Olney papers, 1830-1928.
- Olof E. Lind papers, 1713-1996.
- Open-air school collection of photographs.
- Oppenheim, David, 1922-2007. David Oppenheim papers, 1910-2004.
- Order Division series, Library of Congress archives, 1898-1991.
- Orr, Charlotte Pettis. Charlotte Pettis Orr papers.
- Orr, William, 1860-1939. William Orr papers, 1890-1939.
- Orville Wright papers.
- Oscar Hammerstein II collection, 1847-2000.
- Oscar S. Straus Memorial Association. Oscar S. Straus Memorial Association records. 1927-1954.
- Oscar S. Straus papers, 1856-1955.
- Oscar Terry Crosby papers, 1878-1947.
- Osgood family. Field-Osgood family papers, 1702-1938.
- Osgood family papers.
- Osgood, Maria Bowne Franklin. Maria Bowne Franklin Osgood papers.
- Osgood, Samuel, 1748-1813. Samuel Osgood papers.
- Oskar Ursinus collection of aeronautical pictures.
- Oskar Ursinus papers, 1908-1943.
- Oswald Veblen papers, 1881-1960.
- Otto Isakower and Salomea Isakower papers, 1880-1975.
- Otto Isakower papers.
- Otto Klemperer archive, 1792-1988.
- Oviatt, Martin. Martin Oviatt papers, 1863-1995.
- Owen, Robert L. (Robert Latham), 1856-1947. Robert Latham Owen papers, 1910-1941.
- Owen Wister papers, 1829-1966.
- Oxnam, G. Bromley (Garfield Bromley), 1891-1963. G. Bromley Oxnam papers, 1823-1963.
P
- P. Phillips family papers, 1832-1914.
- Page, Curtis Hidden, 1870-1946. Correspondence and poetry.
- Page family. Naseef-Page family papers, 1880-1936.
- Page family papers.
- Palmer, Alexander Smith, 1806-1894. Alexander Smith Palmer papers.
- Palmer family. Palmer-Loper family papers, 1667-1994.
- Palmer, John McAuley, 1870-1955. John McAuley Palmer papers, 1863-1977.
- Palmer-Loper family papers, 1667-1994.
- Palmer, Nathaniel Brown, 1799-1877. Nathaniel Brown Palmer papers.
- Palmer, T. S. (Theodore Sherman), 1868-1955. T.S. Palmer papers, 1877-1954.
- Pankejeff, Sergius, 1887-1979. Sergius Pankejeff papers, 1901-1979.
- Papers from the Isabelle Sayers collection, circa 1886-1980.
- Papers from the Jim Walsh collection, 1867-1987, and undated.
- Papers relating to the Ford peace plan, 1915-1918.
- Parent, John Carroll, Sr., 1885-1961. John Carroll Parent, Sr., collection 1907-2015.
- Park family. Ham, Connelly, Parks, and Snodgrass families papers, 1870-2018.
- Park, Maud Wood, 1871-1955. Maud Wood Park papers, 1844-1979.
- Parker, Alton B. (Alton Brooks), 1852-1926. Alton B. Parker papers, 1878-1937.
- Parker, Francis LeJau, 1873-1966. Francis LeJau Parker papers, 1905-1935.
- Parks family papers.
- Parr-Gere, Florence, 1875- Florence Parr-Gere papers, 1856-1964.
- Parry, Muriel H., 1922-2004. Muriel H. Parry map collection.
- Parsons, Henry William, 1840-1914. Henry William Parsons papers, 1871-1986.
- Patri, Angelo, 1876-1965. Angelo Patri papers, 1904-1962.
- Patterson, C. P. (Carlile Pollock), 1816-1881. C.P. Patterson papers.
- Patterson, Eliza Pearson, 1826-1902. Eliza Pearson Patterson papers.
- Patterson family. Patterson-Winslow family papers, 1813-1963.
- Patterson, Jefferson, 1891-1977. Jefferson Patterson correspondence and poetry.
- Patterson, Jefferson, 1891-1977. Jefferson Patterson papers, 1824-1981.
- Patterson, Mary Marvin Breckinridge, 1905-2002. Mary Marvin Breckinridge Patterson papers, 1846-2003.
- Patterson, Richard Sharpe, 1908-1976. Richard Sharpe Patterson papers, 1776-1998.
- Patterson-Winslow family papers, 1813-1963.
- Pattie Gresham papers.
- Patton, George S. (George Smith), 1885-1945. George S. Patton papers, 1807-1979.
- Paul, Alice, 1885-1977. Alice Paul papers.
- Paul F. Stiga collection of stage and costume design, 1821-2017.
- Paul Federn papers, 1864-1975.
- Paul J. Pelz papers, circa 1800-1921.
- Paul Wayland Bartlett papers, 1875-1959.
- Paul Wilstach collection of Richard Mansfield papers, 1889-1918.
- Paul Wilstach papers.
- Paulding, Holmes O. (Holmes Offley), 1853-1883. Holmes O. Paulding diary. 1876.
- Paulette Greene papers, 1920-1998.
- Peabody, George Foster, 1852-1938. George Foster Peabody papers, 1894-1937.
- Pearcy, George Washington, 1915-1944. George Washington Pearcy collection, 1915-1949.
- Peirce, Waldo, 1884-1970. Waldo Peirce papers, 1889-1985.
- Pelz, Paul J., 1841-1918. Paul J. Pelz papers, circa 1800-1921.
- Pennell, Elizabeth Robins, 1855-1936. Pennell-Whistler collection. 1597-1937.
- Pennell, Joseph, 1857-1926. Pennell-Whistler collection, 1597-1937.
- Pennell-Whistler collection, 1597-1937.
- People's Legislative Service. People's Legislative Service records, 1921-1931.
- People's Legislative Service records, 1921-1931.
- Percival Flack Brundage papers, 1918-1979.
- Percy Grainger reproductions of selected papers.
- Perlstein, Israel, 1897-1975. Israel Perlstein collection relating to Imperial Russia, 1613-1914.
- Perry, Matthew Calbraith, 1794-1858. Matthew Calbraith Perry papers.
- Perry, Oliver Hazard, 1785-1819. Oliver Hazard Perry papers.
- Perry S. Heath papers, 1890-1983.
- Perry Sanford Heath papers.
- Pershing, Helen F. (Helen Frances), 1880-1915. Helen F. Pershing papers.
- Pershing, John J. (John Joseph), 1860-1948. John J. Pershing papers.
- Pershing, John J. (John Joseph), 1860-1948. John J. Pershing papers, 1882-1971.
- Personal Narratives of the Forced Removal and Incarceration of Japanese Americans During World War 2.
- Personal Narratives of the Forced Removal and Incarceration of Japanese Americans During World War II.
- Personal Narratives of the Forced Removal and Incarceration of Japanese Americans During World War Two.
- Peter A. Demens papers, 1880-2000.
- Peter Shemonsky collection, 1899-1970.
- Peters, Thomas Kimmwood, 1879-1973. Thomas Kimmwood Peters papers, 1896-1973.
- Peyton Conway March map collection.
- Peyton Conway March papers, 1897-1955.
- Pforzheimer, Carl H. (Carl Howard), 1879-1957. Pforzheimer collection of Bruce Rogers materials, 1200-1957.
- Pforzheimer collection of Bruce Rogers materials, 1200-1957.
- Phelps, John S. (John Smith), 1814-1886. John S. Phelps papers.
- Phelps, Mary Whitney. Mary Whitney Phelps papers.
- Phi Beta Kappa. Phi Beta Kappa records, 1776-2006.
- Phi Beta Kappa records, 1776-2006.
- Philander C. Knox papers, 1796-1922.
- Philip E. Scholz collection, 1918-1920.
- Philip Lee Phillips papers, 1885-1921.
- Philippe Bunau-Varilla papers, 1877-1955.
- Phillips, Carrie Fulton, 1873-1960. Warren G. Harding-Carrie Fulton Phillips correspondence, 1910-1924.
- Phillips, Eugenia Levy. Eugenia Levy Phillips journal. 1861-1862.
- Phillips / Mathée collection, 1900-2014.
- Phillips, P. (Philip), 1807-1884. P. Phillips family papers, 1832-1914.
- Phillips, Philip Lee, 1857-1924. Philip Lee Phillips papers, 1885-1921.
- Phillips, W. Hallett (William Hallet), 1853-1897. W. Hallett Phillips papers.
- Photograph album on early aviation owned by the family of Ian Hornak.
- Photographs, Illustrations, and Objects series, Library of Congress archives, 1909-1991.
- Photographs selected from the Königliche Preussische Messbildanstalt.
- Pickerill, Elmo N. (Elmo Neale), 1885-1968. Elmo N. Pickerill papers, 1910-1975.
- Pickett family. Christiancy and Pickett families papers, 1835-1998.
- Pickett family papers.
- Pickett, George E. (George Edward), 1825-1875. George E. Pickett papers.
- Pickett, George E. (George Edward), 1891 or 1892-1959. George E. Pickett papers.
- Pickett, La Salle Corbell, 1848-1931. La Salle Corbell Pickett papers.
- Pickow, George. Jean Ritchie and George Pickow collection, 1923-2015.
- Pierson family papers.
- Pierson family. Pierson, Rioch, and Layton families papers, 1777-2012.
- Pierson, Rioch, and Layton families papers, 1777-2012.
- Pike family. Pike-McConnell-Donaldson family papers, 1770-1967.
- Pike-McConnell-Donaldson family papers, 1770-1967.
- Pinchot, Amos, 1873-1944. Amos Pinchot papers, 1856-1945.
- Pinchot, Cornelia Bryce, 1881-1960. Cornelia Bryce Pinchot papers, 1899-1960.
- Pinchot, Gifford, 1865-1946. Gifford Pinchot map collection.
- Pinchot, Gifford, 1865-1946. Gifford Pinchot papers, 1770-1972.
- Pinchot, James W., 1831-1908. James W. Pinchot papers.
- Pinchot, Mary Eno. Mary Eno Pinchot papers.
- Pinchot, Rosamond, 1904-1938. Rosamond Pinchot papers, 1918-1955.
- Pinhey, Amy Putnam. Amy Putnam Pinhey correspondence and diaries.
- Pinkerton, Allan, 1819-1884. Allan Pinkerton papers.
- Pinkerton, Allan, 1876-1930. Allan Pinkerton papers.
- Pinkerton, Robert A., 1904-1967. Robert A. Pinkerton papers.
- Pinkerton, Robert A. (Robert Allan), 1848-1907. Robert A. Pinkerton papers.
- Pinkerton, William A. (William Allan), 1846-1923. William A. Pinkerton papers.
- Pinkerton's National Detective Agency. Pinkerton's National Detective Agency records, 1853-1999.
- Pinkerton's National Detective Agency records, 1853-1999.
- Pirie MacDonald photographic collection.
- Pittman, Key, 1872-1940. Key Pittman papers, 1898-1951.
- Plitt, George. George Plitt papers. 1836-1873.
- Pollard family. Coolidge-Pollard families papers, 1818-2015.
- Pollard family papers.
- Pollard, Isaac, Jr., 1830-1917. Isaac Pollard, Jr., correspondence and diary. 1850-1855.
- Pollitzer, Anita, 1894-1975. Anita Pollitzer papers.
- Poor, Alfred Easton, 1899-1988. Alfred Easton Poor papers, 1866-1985.
- Porter, Horace, 1837-1921. Horace Porter papers, 1853-1922.
- Post, Alice Thacher, 1853-1947. Alice Thacher Post papers.
- Post, Louis F. (Louis Freeland), 1849-1928. Louis F. Post papers, 1864-1940.
- Powell, E. Alexander (Edward Alexander), 1879-1957. E. Alexander Powell papers, 1893-1957.
- Powell, Sophy Hulsizer, -1937. Sophy Hulsizer Powell papers.
- Pratt, Bela Lyon, 1867-1917. Bela Lyon Pratt papers, 1884-1918.
- Pray, Eleanor Lord, 1868-1954. Eleanor Lord Pray papers, 1894-1975.
- Presbyterian Church in the U.S.A. Presbytery of Washington City. Presbyterian Church in the U.S.A. Presbytery of Washington City records, 1823-1950.
- Presbyterian Church in the U.S.A. Presbytery of Washington City records, 1823-1950.
- Preston family. Campbell-Preston-Floyd families papers, 1741-1931.
- Preston family papers.
- Price family papers, 1854-1905.
- Price family. Price family papers, 1854-1905.
- Price, John H., active 1861-1865. John H. Price papers.
- Price, William George, 1833-1885. William George Price papers.
- Price, William George, 1867-1944. William George Price papers.
- Prince, Willard B., 1888-1949. Willard B. Prince collection of World War I maps and related materials.
- Princess Marie Bonaparte papers, 1889-1962.
- Prints and bookplates by Sidney Lawton Smith.
- Pritchett, Henry S. (Henry Smith), 1857-1939. Henry S. Pritchett correspondence. 1901-1910.
- Pritchett, Henry S. (Henry Smith), 1857-1939. Henry S. Pritchett papers, 1876-1967.
- Pritchett, Henry S. (Henry Smith), 1857-1939. What is religion? and other student questions; talks to college students. 1906.
- Procter, John Robert, 1844-1903. John Robert Procter papers, 1867-1903.
- Progressive military maps of the United States.
- Puerto Rican memorial collection, 1519-1923.
- Puleston, W. D. (William Dilworth), 1881- W.D. Puleston research and writings file. 1806-1939.
- Pulitzer, Joseph, 1847-1911. Joseph Pulitzer papers, 1880-1924.
- Purdy, Ray Foote, 1898-1965. Ray Foote Purdy papers. 1812-1974.
- Pusey, Merlo J. (Merlo John), 1902-1985. Merlo John Pusey papers.
- Putnam, Brenda, 1890-1975. Brenda Putnam correspondence.
- Putnam, C. H. (Catherine Hunt), 1792- C.H. Putnam correspondence.
- Putnam, Charlotte Elizabeth Munroe, -1928. Charlotte Elizabeth Munroe Putnam correspondence.
- Putnam, George Palmer, 1814-1872. George Palmer Putnam correspondence.
- Putnam, Harrington, 1851-1937. Harrington Putnam papers, 1909-1928.
- Putnam, Herbert, 1861-1955. Herbert Putnam papers, 1783-1958.
- Putnam, Israel, 1718-1790. Israel Putnam correspondence.
- Putnam, Ruth, 1856-1931. Ruth Putnam correspondence and diaries.
- Pyle, Stephen D. (Stephen Donald), 1888-1969. Stephen D. Pyle papers, 1924-1927.
Q
- Quay, Matthew Stanley, 1833-1904. Matthew Stanley Quay papers, 1776-1949.
- Queenstown Association (U.S.). Queenstown Association (U.S.) records, 1913-1980.
- Queenstown Association (U.S.) records, 1913-1980.
R
- Rachmaninoff, Sergei, 1873-1943. Sergei Rachmaninoff archive, 1872-1992.
- Rainey, Henry Thomas, 1860-1934. Henry Thomas Rainey papers, 1904-1934.
- Ralph Block papers, 1872-1971.
- Rand, Wallace E., 1897-1918. Wallace E. Rand collection 1893-1919.
- Randall, J. G. (James Garfield), 1881-1953. J.G. Randall and Ruth Painter Randall papers, 1779-1970.
- Randall, Ruth Painter. J.G. Randall and Ruth Painter Randall papers. 1779-1970.
- Raoul Heilbronner papers, 1887-1952.
- Rash, Bryson B. Bryson B. Rash papers, 1918-1992.
- Rawleigh, William Thomas, 1870-1951. William Thomas Rawleigh papers, 1911-1931.
- Ray & Waggaman collection.
- Ray architectural drawing archive (Library of Congress).
- Ray collection.
- Ray Eber Brown papers, 1915-1962.
- Ray, Luther R. (Luther Reason), 1892-1978. Ray architectural drawing archive (Library of Congress).
- Ray Stannard Baker papers, 1836-1947.
- Raymond Clapper papers, 1908-1962.
- Raymond G. Carroll papers, 1905-1944.
- Raymond Leslie Buell papers, 1915-1981.
- Raymond Rubicam papers, 1921-1988.
- R.C. Leffingwell letterbooks, 1917-1920.
- R.C. Leffingwell papers.
- Read family papers, 1568-1906.
- Read family. Read family papers, 1568-1906.
- Read, George, 1733-1798. George Read papers.
- Read, George, 1765-1836. George Read papers.
- Read, James, 1743-1822. James Read papers.
- Read, John, 1769-1854. John Read papers.
- Read, John M. (John Meredith), 1797-1874. John M. Read papers.
- Read, John Meredith, 1837-1896. John Meredith Read papers.
- Real Sociedad Económica de Amigos del País (Cuba). Real Sociedad Económica de Amigos del Pais (Cuba) records. 1863-1869.
- Ream, Vinnie, 1847-1914. Vinnie Ream and R.L. Hoxie papers, 1853-1937.
- Rebekah Crawford and Linda Clarke-Smith papers, 1715-1929.
- Reeves, Arthur Middleton, 1856-1891. Arthur Middleton Reeves papers.
- Reeves, Mark E. Mark E. Reeves papers.
- Reginald Rowan Belknap papers, 1784-1929.
- Reich, Wilhelm, 1897-1957. Wilhelm Reich papers, 1920-1952.
- Reid, Elisabeth Mills, 1858-1931. Elisabeth Mills Reid papers.
- Reid family map collection.
- Reid family papers, 1795-2003.
- Reid family. Reid family papers, 1795-1970.
- Reid Foundation. Reid Foundation records. 1944-1958.
- Reid, Helen Rogers, 1882-1970. Helen Rogers Reid papers.
- Reid, Ogden Mills, 1882-1947. Ogden Mills Reid papers.
- Reid, Whitelaw, 1837-1912. Whitelaw Reid papers.
- Reid, Whitelaw, 1913-2009. Whitelaw Reid papers.
- Remey, Charles Mason, 1874-1974. Charles Mason Remey family papers, 1778-1949.
- Remey family. Charles Mason Remey family papers, 1778-1949.
- Remey, George Collier, 1841-1928. George Collier Remey papers.
- Remey, Mary Josephine Mason, 1845-1938. Mary Josephine Mason Remey papers.
- Reproductions of selected Percy Grainger papers, 1909-1952.
- Republican campaign collection, 1902-1926.
- Restout, Denise. Wanda Landowska and Denise Restout papers, circa 1850s-1969.
- Reynolds, Joseph Jones, 1822-1899. Joseph Jones Reynolds papers.
- Reynolds, Juliana Smith. Juliana Smith Reynolds papers.
- Reynolds, Tilton C., 1843-1913. Tilton C. Reynolds papers, 1851-1963.
- Richard Edes Harrison maps and papers collection.
- Richard Koszarski collection of research material on the early history of Universal Pictures Corporation, 1906-1996.
- Richard M. Look map collection.
- Richard Mansfield papers.
- Richard Olney papers, 1830-1928.
- Richard Sharpe Patterson papers, 1776-1998.
- Richards, Grant, 1872-1948. Grant Richards collection of A.E. Housman material, 1898-1947.
- Richards, William Henry, 1856-1941. William Henry Richards papers, 1856-1946.
- Richardson, Holden Chester, 1878- Holden Chester Richardson papers, 1844-1946.
- Richardson, Nina Maud. Nina Maud Richardson papers.
- Richmond Pearson Hobson papers, 1889-1966.
- Rickenbacker, Eddie, 1890-1973. Eddie Rickenbacker papers, 1915-1973.
- Rigby family papers.
- Rigby family. Tunnicliff, Rigby, and Staton families papers, 1854-1990.
- Riggs, Brett. Brett Riggs influenza pandemic archive, 1891-1945.
- Riggs, Elisha, 1779-1853. Elisha Riggs papers. 1813-1896.
- Riggs, Elisha, 1826-1881. Elisha Riggs papers. 1844-1890.
- Riggs, Elisha Francis, 1851-1910. Elisha Francis Riggs papers. 1860-1910.
- Riggs, Elisha Francis, 1887-1936. Elisha Francis Riggs papers. 1887-1935.
- Riggs family papers, 1763-1945.
- Riggs family. Riggs family papers, 1763-1945.
- Riggs, George Washington, 1813-1881. George Washington Riggs papers. 1836-1881.
- Riggs, Romulus, 1782-1846. Romulus Riggs papers. 1821-1882.
- Riggs, T. Lawrason (Thomas Lawrason), 1888-1943. T. Lawrason Riggs papers. 1790-1943.
- Riggs, Thomas, 1873-1945. Thomas Riggs papers. 1887-1945.
- Riggs, William Henry, 1837-1924. William Henry Riggs papers. 1850-1912.
- Rihani, Ameen Fares, 1876-1940. Ameen Fares Rihani papers, 1897-1940.
- Riis, Jacob A. (Jacob August), 1849-1914. Jacob A. Riis papers, 1870-1990.
- Riis, Roger William, 1894-1953. Roger William Riis papers, 1903-1990.
- Riley, James Whitcomb, 1849-1916. James Whitcomb Riley papers, 1883-1915.
- Rioch family papers.
- Rioch family. Pierson, Rioch, and Layton families papers, 1777-2012.
- Ritchie, Jean. Jean Ritchie and George Pickow collection, 1923-2015.
- Robbins, Henry Alfred, 1839-1911. Henry Alfred Robbins journals. 1870-1904.
- Robbins, Howard Elbridge, 1888-1963. Howard Elbridge Robbins collection 1918.
- Robbins, Thomas H. (Thomas Hinckley), 1900-1972. Thomas H. Robbins papers, 1918-1971.
- Robert A. Lavender papers, 1911-1976.
- Robert C. Ogden papers, 1843-1913.
- Robert E. Sherwood papers.
- Robert E. Sherwood play scripts, 1921-1962.
- Robert Emmet Sherwood papers.
- Robert Frost papers.
- Robert H. McNeill family papers, 1839-2008.
- Robert H. Terrell papers, 1870-1954.
- Robert, Henry M. (Henry Martyn), 1837-1923. Henry M. Robert papers, 1853-1937.
- Robert Lansing papers, 1831-1959.
- Robert Latham Owen papers, 1910-1941.
- Robert Lee Bullard papers, 1881-1955.
- Robert McNutt McElroy papers, circa 1909-1924.
- Robert Patterson Hughes papers, 1876-1994.
- Robert R. Hitt papers, 1830-1906.
- Robert Staughton Lynd and Helen Merrell Lynd papers, 1895-1968.
- Robert Staughton Lynd papers.
- Robert Todd Lincoln family papers, 1864-1938.
- Robert W. Bonynge papers, 1881-1939.
- Robert Wickliffe Woolley papers, 1842-1956.
- Robert Winslow Gordon papers, 1840-1961.
- Roberts, Elizabeth Madox, 1881-1941. Elizabeth Madox Roberts papers, 1921-1941.
- Roberts family. Joseph J. Roberts family papers, 1839-2001.
- Roberts family papers.
- Roberts, Joseph J. (Joseph Jenkins), 1809-1876. Joseph J. Roberts family papers, 1839-2001.
- Roberts, Kenneth Lewis, 1885-1957. Kenneth Lewis Roberts papers, 1919-1956.
- Robertson, James Alexander, 1873-1939. James Alexander Robertson papers, 1816-1939.
- Robinson, Edwin Arlington, 1869-1935. Edwin Arlington Robinson papers, 1913-1940.
- Robinson, Lydia S. M. Lydia S.M. Robinson collection relating to World War I, 1914-1942.
- Robles, Sebastian T. (Sebastian Tomas), 1901-1959. Sebastian T. Robles cartoon. 1934.
- Robson, May, 1858-1942. May Robson papers, 1849-1955.
- Rodgers family papers, 1740-1987.
- Rodgers family papers, 1788-1944.
- Rodgers family. Rodgers family papers, 1740-1987.
- Rodgers family. Rodgers family papers, 1788-1944.
- Rodgers, Frederick, 1842-1917. Frederick Rodgers papers, 1852-1920.
- Rodgers, John, 1773-1838. John Rodgers papers. (2)
- Rodgers, John, 1812-1882. John Rodgers papers.
- Rodgers, John, 1881-1926. John Rodgers papers.
- Rodgers, John Augustus, 1848-1933. John Augustus Rodgers papers.
- Rodgers, Minerva Denison, 1784-1877. Minerva Denison Rodgers papers.
- Rodgers, William Ledyard, 1860-1944. William Ledyard Rodgers papers.
- Rodolfo R. Schuller papers, 1492-1915.
- Rodríguez, José Ignacio, 1831-1907. José Ignacio Rodríguez papers, 1860-1907.
- Roe, Gilbert E. (Gilbert Ernstein), 1865-1929. Gilbert E. Roe papers. 1887-1961.
- Roger Welles papers, 1884-1926.
- Roger William Riis papers, 1903-1990.
- Rogers, Alfred Thomas, 1873-1948. Alfred Thomas Rogers papers. 1900-1928.
- Rogers, Bruce, 1870-1957. Pforzheimer collection of Bruce Rogers materials, 1200-1957.
- Rogers, Leighton W. (Leighton William), 1893-1962. Leighton W. Rogers papers, 1912-1982.
- Rohe, Alice, 1876-1957. Alice Rohe papers, 1914-1919.
- Roland S. Morris papers, 1910-1943.
- Romanucci-Ross, Lola. Lola Romanucci-Ross papers.
- Ronsheim, Milton 1894-1968 Louis Milton Ronsheim collection, 1914-2000.
- Roosevelt, Archibald, Jr., 1918-1990. Archibald Roosevelt Jr. papers.
- Roosevelt, Belle, 1892-1968. Kermit Roosevelt and Belle Roosevelt papers. 1885-1975.
- Roosevelt, Eleanor Butler, 1888-1960. Eleanor Butler Roosevelt papers.
- Roosevelt, Kermit, 1889-1943. Kermit Roosevelt and Belle Roosevelt papers, 1725-1975.
- Roosevelt, Theodore, 1858-1919. Theodore Roosevelt papers, 1759-1993.
- Roosevelt, Theodore, Jr., 1887-1944. Theodore Roosevelt Jr. papers, 1780-1962.
- Root, Elihu, 1845-1937. Elihu Root papers, 1863-1937.
- Roper, Laura Wood, 1911-2003. Laura Wood Roper map collection. (2)
- Roper, Laura Wood, 1911-2003. Laura Wood Roper papers.
- Roper, Laura Wood, 1911-2003. Laura Wood Roper papers, 1822-1982.
- Rosa Freud Graf papers, 1879-1942.
- Rosamond Pinchot papers, 1918-1955.
- Rose Marie and Harold Spivacke Fund collection.
- Rose Marie Grentzer and Harold Spivacke Fund collection, 1615-1994.
- Ross A. Collins papers, 1906-1967.
- Roswell Randall Hoes papers, 1799-1912.
- Rotch, Abbott Lawrence, 1861-1912. Abbott Lawrence Rotch papers 1896-1912.
- Rouben Mamoulian papers, 1740-1987.
- Rowland V. Lee papers, 1907-1971.
- Roy Wilson Howard papers, 1911-1966.
- Royal E. Ingersoll papers.
- Royal Rodney Ingersoll and Royal E. Ingersoll papers, 1866-1935.
- Royal Rodney Ingersoll papers.
- R.R. Bowker papers, 1831-1931.
- Rubicam, Raymond, 1892-1978. Raymond Rubicam papers, 1921-1988.
- Rudolf Kolisch collection, 1921-1943.
- Rudolph and Joseph Schildkraut scrapbooks, 1867-1964.
- Rudolph, Cuno Hugo, 1860-1932. Cuno Hugo Rudolph scrapbooks, 1910-1929.
- Rudolph Forster papers, 1898-1943.
- Russell, Charles Edward, 1860-1941. Charles Edward Russell papers, 1864-1941.
- Russell, Clyde Wilbur, 1888-1973. Clyde Wilbur Russell collection, 1917-1919.
- Russell Sage Foundation records, 1908-1942.
- Russell Sage Foundation. Russell Sage Foundation records, 1908-1942.
- Russia miscellany, 1759-1928.
- Russian Orthodox Greek Catholic Church of America. Diocese of Alaska records, 1733-1938.
- Russian Orthodox Greek Catholic Church of America. Diocese of Alaska. Russian Orthodox Greek Catholic Church of America. Diocese of Alaska records, 1733-1938.
- Ruth Painter Randall papers.
- Ruthven Deane bookplate collection.
- Rylʹsʹkyĭ Institute Ukrainian cylinder collection, 1908-1930s.
S
- Sacco-Vanzetti Defense Committee. Sacco-Vanzetti Defense Committee bulletins. 1926-1930.
- Sacco-Vanzetti National League. Sacco-Vanzetti National League bulletins. 1929.
- Salomea Isakower papers.
- Samuel Chiles Mitchell papers, 1903-1913.
- Samuel Franklin Emmons papers, 1725-1914.
- Samuel Guy Inman papers, 1901-1965.
- Samuel J. Woolf collection.
- Samuel McGowan papers, 1883-1943.
- Samuel P. Warren collection, 1849-1915.
- Samuel W. Dike papers, 1870-1913.
- Samuel Whittemore Boggs papers, 1912-1954.
- Sandburg, Carl, 1878-1967. Carl Sandburg poetry drafts.
- Sanders, Everett, 1882-1950 Everett Sanders papers, 1913-1950.
- Sándor Lorand papers, 1914-1978.
- Sapoznik, Henry. Henry Sapoznik collection, circa 1920-1960.
- Sarah Stone autograph collection, 1720-1962.
- Sardeau, Hélène, 1899-1969. Hélène Sardeau papers.
- Sargent, Harry N. Harry N. Sargent papers, 1917-1920.
- Sargent, Nathan, 1849-1907. Nathan Sargent papers, 1866-1957.
- Sayers, Isabelle S. Isabelle Sayers papers, circa 1886-1980.
- Sayre, Francis Bowes, 1885-1972. Francis Bowes Sayre papers, 1861-1967.
- Scala, Francis Maria, 1819?-1903. Francis Maria Scala papers, 1816-2013.
- Schildkraut, Joseph, 1895-1964. Rudolph and Joseph Schildkraut scrapbooks. 1867-1964.
- Schildkraut, Leonora. Rudolph and Joseph Schildkraut scrapbooks, 1867-1964.
- Schildkraut, Rudolph. Rudolph and Joseph Schildkraut scrapbooks, 1867-1964.
- Schirmer, Gustave, 1864-1907. Grace and Gustave Schirmer correspondence and other papers, 1845-1949.
- Schmitt, Bernadotte Everly, 1886-1969. Bernadotte Everly Schmitt papers, 1868-1970.
- Schnabel, Artur, 1882-1951. Artur Schnabel collection, 1899-1950.
- Schneider, Anne Kaufman. George S. Kaufman and Anne Kaufman Schneider papers. circa 1892-1998.
- Schneider, J. Thomas (John Thomas), 1895-1976. J. Thomas Schneider map collection.
- Schneider, J. Thomas (John Thomas), 1895-1976. J. Thomas Schneider papers.
- Schneider, J. Thomas (John Thomas), 1895-1976. J. Thomas Schneider papers, 1915-1960.
- Schoen, Aaron. Aaron Schoen World War I map collection.
- Schoenberg, Arnold, 1874-1951. Arnold Schoenberg correspondence and other papers, 1894-1959.
- Scholz, Philip E., 1895-1962. Philip E. Scholz collection, 1918-1920.
- Schuller, Gunther. Gunther Schuller papers, 1615-2014.
- Schuller, Rodolfo R., 1873-1932. Rodolfo R. Schuller papers, 1492-1915.
- Schur, Max. Max Schur papers, 1923-1974.
- Schurz, Carl, 1829-1906. Carl Schurz papers, 1837-1983.
- Schwartz, Theodore. Theodore Schwartz papers.
- Scott, Hugh Lenox, 1853-1934. Hugh Lenox Scott papers, 1582-1981.
- Scott, Julia Green, 1839-1923. Julia Green Scott papers.
- Scott, William McKendree, 1817-1861. William McKendree Scott journal. 1845.
- Scudder Klyce papers, 1911-1933.
- See, T. J. J. (Thomas Jefferson Jackson), 1866- T.J.J. See papers, 1887-1960.
- Seeger, Charles, 1886-1979. Seeger family collection, 1846-2023.
- Seeger family collection, 1846-2023.
- Select papers from the George Kleine film collection, 1886-1946.
- Selman A. Waksman papers, 1915-1960.
- Selman Abraham Waksman papers.
- Senegal map collection, 1690-1973.
- Serge Diaghilev/Serge Lifar collection, 1750-1950.
- Serge Grigoriev / Ballets Russes archive, 1909-2009.
- Serge Koussevitzky archive, 1880-1978.
- Serge Lifar collection on Serge Diaghilev, 1750-1950.
- Sergei Rachmaninoff archive, 1872-1992.
- Sergius Pankejeff papers, 1901-1979.
- Severn, Elizabeth. Elizabeth Severn and Margaret Severn papers, 1880-1994.
- Severn, Margaret. Elizabeth Severn and Margaret Severn papers. 1880-1993.
- Sewall-Belmont House. Sewall-Belmont House records.
- Shaker collection of records concerning the United Society of Believers in Christ's Second Appearing, 1676-1937.
- Sheets, Henry Harrison. Henry Harrison Sheets papers.
- Sheldon, Mary French, 1847-1936. Mary French Sheldon papers, 1885-1938.
- Shemonsky, Peter, 1878-1943. Peter Shemonsky collection, 1899-1970.
- Shepherd, William R. (William Robert), 1871-1934. William R. Shepherd papers, 1554-1931.
- Sherwood, Robert E. (Robert Emmet), 1896-1955. Robert E. Sherwood play scripts, 1921-1962.
- Shippen, Alice Lee, 1736-1817. Alice Lee Shippen papers. (2)
- Shippen, Edward, 1826-1911. Edward Shippen papers.
- Shippen family papers, 1671-1936.
- Shippen family. Shippen family papers, 1671-1936.
- Shippen, Thomas Lee, 1765-1798. Thomas Lee Shippen papers. (2)
- Shippen, William, Jr., 1736-1808. William Shippen Jr. papers. (2)
- Shippen, William, Sr., 1712-1801. William Shippen Sr. papers.
- Shriner, Sara, 1904-2003. Sara Shriner papers.
- Shuster, W. Morgan (William Morgan), 1877-1960. W. Morgan Shuster papers, 1900-1964.
- Sickles, Daniel Edgar, 1819-1914. Daniel Edgar Sickles papers, 1821-1918.
- Sidell, William Henry, 1810-1873. William Henry Sidell papers. 1849.
- Sidonie Matsner Gruenberg papers.
- Sigmund Freud collection. (17)
- Sigmund Freud papers and collection.
- Sigmund Freud papers, circa 6th century BCE-1998 CE.
- Silas Casey papers, 1771-1941.
- Simmons, Hiram, 1874-1938. Bertha W. Edwards collection on Hiram Simmons, 1907-1980.
- Simms, Ruth Hanna McCormick, 1880-1944. Ruth Hanna McCormick Simms papers.
- Simon Newcomb papers, 1813-1949.
- Simonds, George Sherwin, 1874-1938. George Sherwin Simonds papers, 1894-1937.
- Simons, Alfred E. Alfred E. Simons papers.
- Simons family papers, 1887-1982.
- Simons family. Simons family papers, 1887-1982.
- Simons, William H., 1881-1938. William H. Simons papers.
- Simons, William H., 1924- William H. Simons papers.
- Sims, Anne Hitchcock, 1875-1960. Anne Hitchcock Sims papers.
- Sims, William Sowden, 1858-1936. William Sowden Sims papers, 1856-1951.
- Sioussat, St. George L. (St. George Leakin), 1878-1960. St. George L. Sioussat papers, 1831-1959.
- Sir Francis Joseph Campbell papers, 1870-1935.
- Sirch, Charles W. Charles W. Sirch papers, 1878-1935.
- Sisson, Nathaniel, 1845-1932. Nathaniel Sisson papers, 1838-1932.
- Skidmore, Louis, 1897-1962. Louis Skidmore papers, 1908-1976.
- Slonimsky, Nicolas, 1894-1995. Nicolas Slonimsky collection, 1873-1997.
- Smith, Charles Perley, 1878-1948. Charles Perley Smith papers, 1920-1946.
- Smith Ely Jelliffe papers, 1882-1977.
- Smith, Erwin F. (Erwin Frink), 1854-1927. Erwin F. Smith papers, 1876-1927.
- Smith, Herbert A. (Herbert Augustine), 1866-1944. Herbert A. Smith papers.
- Smith, Horatio Davis, 1845-1918. Horatio Davis Smith papers.
- Smith, Leonard B. (Leonard Bingley), 1915-2002. Leonard B. Smith papers, 1859-2001.
- Smith, Logan Pearsall, 1865-1946. Logan Pearsall Smith papers, 1760-1946.
- Smith, Sidney Lawton, 1845-1929. Prints and bookplates by Sidney Lawton Smith.
- Snodgrass family. Ham, Connelly, Parks, and Snodgrass families papers, 1870-2018.
- Snodgrass family papers.
- Snow, Elliot, 1866-1939. Elliot Snow papers, 1790-1942.
- Snowden, Anna Jean, approximately 1895- Anna Jean Snowden papers, 1910-1949.
- Society for the Preservation of the American Musical Heritage collection, 1792-1969.
- Society of Woman Geographers records, 1905-2015.
- Society of Woman Geographers. Society of Woman Geographers records, 1905-2015.
- Solano, Solita, 1888-1975. Visual materials from the Janet Flanner and Solita Solano papers.
- Solberg, Thorvald, 1852-1949. Thorvald Solberg papers, 1882-1949.
- Solomon, Hannah G. (Hannah Greenebaum), 1858-1942. Hannah G. Solomon papers, 1817-1986.
- Solon Hannibal Borglum papers, 1886-1969.
- Sousa, John Philip, 1854-1932. Christopher Dodrill collection on John Philip Sousa, 1876-1992.
- Sousa, John Philip, 1854-1932. John Philip Sousa collection 1849-2004.
- Sousa, John Philip, 1854-1932. Music of the Sousa Band and Victor Grabel, 1861-1954.
- Sousa, John Philip, 1854-1932. Works. Selections.
- Souvenir viewbook booklets of Washington, D.C., and environs.
- Sperry, Charles S. (Charles Stillman), 1847-1911. Charles S. Sperry papers, 1862-1912.
- Spialek, Hans. Hans Spialek papers, 1895-1984.
- Spingarn, Arthur B. (Arthur Barnett), 1878-1971. Arthur B. Spingarn papers, 1850-1968.
- Spivacke fund (Rose Marie and Harold Spivacke) collection.
- Spooner, John C. (John Coit), 1843-1919. John C. Spooner papers, 1855-1909.
- St. George L. Sioussat papers, 1831-1959.
- Staatliche Bildstelle (Prussia, Germany). Photographs selected from the Königliche Preussische Messbildanstalt.
- Stacy Conrad Farrior family papers, 1907-1949.
- Stanford Caldwell Hooper papers, 1899-1955.
- Stanton, Elizabeth Cady, 1815-1902. Elizabeth Cady Stanton papers, 1814-1946.
- Staton family papers.
- Staton family. Tunnicliff, Rigby, and Staton families papers, 1854-1990.
- Stedman, Edmund Clarence, 1833-1908. Edmund Clarence Stedman papers, 1871-1923.
- Stephen Bleecker Luce papers, 1799-1955.
- Stephen Bonsal papers, 1890-1973.
- Stephen D. Pyle papers, 1924-1927.
- Stephenson, John Aldrich. John Aldrich Stephenson collection of the Hand, Fiske, and Aldrich families papers. 1745-1966.
- Stephenson, Nathaniel W. (Nathaniel Wright), 1867-1935. Nathaniel W. Stephenson biographer's papers. 1860-1930.
- Stephenson, Nathaniel W. (Nathaniel Wright), 1867-1935. Nathaniel W. Stephenson papers.
- Stereographs showing staged story sequences.
- Stevenson, Burton Egbert, 1872-1962. Burton Egbert Stevenson papers, 1900-1951.
- Stewart, Emily A. Emily A. Stewart collection of Elihu Root material, 1885-1959.
- Stickney, Frank L., 1858-1940. Frank L. Stickney papers, 1850-1938.
- Stiga, Paul F., 1936-2019. Paul F. Stiga collection of stage and costume design, 1821-2017.
- Stock, Leo Francis, 1878-1954. Leo Francis Stock papers.
- Stone, Irving, 1903-1989. Irving Stone papers.
- Stone, Sarah, active 1840. Sarah Stone autograph collection, 1720-1962.
- Storey, Moorfield, 1845-1929. Moorfield Storey papers, 1876-1929.
- Stotesbury collection of World War I clippings, 1914-1918.
- Stotesbury, Eva Roberts Cromwell. Stotesbury collection of World War I clippings, 1914-1918.
- Stout, Wesley Winans, 1890- Wesley Winans Stout papers, 1913-1954.
- Stowell, Ellery C. (Ellery Cory), 1875-1958. Ellery C. Stowell papers, 1805-1952.
- Strasberg, Lee. Lee Strasberg papers, 1780-2006.
- Straus, Oscar S. (Oscar Solomon), 1850-1926. Oscar S. Straus papers, 1856-1955.
- Strauss, Joseph, 1861-1948. Joseph Strauss papers, 1884-1949.
- Sullivan, Mark, 1874-1952. Mark Sullivan papers, 1900-1935.
- Summerall, Charles Pelot, 1867-1955. Charles Pelot Summerall map collection. (3)
- Summerall, Charles Pelot, 1867-1955. Charles Pelot Summerall papers.
- Summerall, Charles Pelot, 1867-1955. Charles Pelot Summerall papers, 1880-1955.
- Sunday, Billy, 1862-1935. William L. Daley collection relating to Billy Sunday, 1914-1925.
- Susan B. Anthony Foundation, Washington, D.C., records, 1895-1943.
- Susan B. Anthony Foundation (Washington, D.C.). Susan B. Anthony Foundation, Washington, D.C., records, 1895-1943.
- Susan B. Anthony papers, 1846-1934.
- Susan Brownell Anthony papers.
- Sutherland, George, 1862-1942. George Sutherland papers, 1850-1944.
- Sweetser, Arthur, 1888-1968. Arthur Sweetser papers, 1913-1961.
- Swift, Ernest John. Ernest John Swift papers, 1908-2019.
- Swisher, Carl Brent, 1897-1968. Carl Brent Swisher collection of research material relating to Roger Brooke Taney, 1836-1962.
- Symington, Evelyn Wadsworth, 1903-1972. Evelyn Wadsworth Symington collection of John Hay material, 1864-1905.
T
- T. De Witt Talmage papers, 1831-1902.
- T. Swann Harding papers, 1918-1963.
- Tabor, Edward Otto, 1885-1948. Edward Otto Tabor papers, 1918-1948.
- Taft, Alphonso, 1810-1891. Alphonso Taft papers.
- Taft, Charles P. (Charles Phelps), 1897-1983. Charles P. Taft map collection.
- Taft, Charles P. (Charles Phelps), 1897-1983. Charles P. Taft papers, 1816-1983.
- Taft, Helen Herron, 1861-1943. Helen Herron Taft papers.
- Taft, Louise Maria Torrey, 1827-1907. Louise Maria Torrey Taft papers.
- Taft, William H. (William Howard), 1857-1930. William H. Taft papers, 1784-1973.
- Taft, William Howard, 1915-1991. William Howard Taft papers, 1915-1953.
- Talcott, Charles G. (Charles Gratiot) Charles G. Talcott papers.
- Talcott, Theodosia L. Theodosia L. Talcott papers.
- Talma, Louise, 1906-1996. Louise Talma papers, 1861-1998.
- Talmage, T. De Witt (Thomas De Witt), 1832-1902. T. De Witt Talmage papers, 1831-1902.
- Tams-Witmark collection, 1701-1915.
- Tams-Witmark (Original Library of Congress collection), 1701-1915.
- Tanner, Benj. T. (Benjamin Tucker), 1835-1923. Benjamin T. Tanner papers. 1827-1872.
- Tanneyhill, Ann. Ann Tanneyhill papers, 1879-2012.
- Tasker Howard Bliss collection of World War I maps and related materials.
- Tasker Howard Bliss papers, 1864-1933.
- Taylor, Montgomery Meigs, 1869-1952. Montgomery Meigs Taylor papers, 1890-1935.
- Taylor, Zachary, 1784-1850. Zachary Taylor papers, 1814-1931.
- Tee-Van, Helen Damrosch, 1893-1976. Damrosch - Tee Van Collection. 1856-1969.
- Terhune, Albert Payson, 1872-1942. Albert Payson Terhune papers, 1890-1957.
- Terrell, Mary Church, 1863-1954. Mary Church Terrell papers, 1851-1962.
- Terrell, Robert H. (Robert Heberton), 1857-1925. Robert H. Terrell papers, 1870-1954.
- Terry, Thomas Estévez, 1893-1969. Thomas Estévez Terry collection, 1918-1919.
- Tesla, Nikola, 1856-1943. Nikola Tesla correspondence, 1890-1934.
- T.H. Gallaudet and Edward Miner Gallaudet papers, 1806-1958.
- T.H. Gallaudet papers.
- Tharp, Marie. Heezen-Tharp collection.
- Tharp, Marie. Heezen-Tharp collection : Antarctica.
- Tharp, Marie. Heezen-Tharp collection : Arctic Ocean.
- Tharp, Marie. Heezen-Tharp collection : Atlantic Ocean.
- Tharp, Marie. Heezen-Tharp collection : Indian Ocean.
- Tharp, Marie. Heezen-Tharp collection : Pacific Ocean.
- Tharp, Marie. Heezen-Tharp collection : World/Miscellaneous.
- The Office of Strategic Services maps on microfilm collection.
- Theater programs, playbills and miscellany from the Rouben Mamoulian Collection.
- Theo. A. Bingham papers, 1897-1903.
- Theodore Gordon Ellyson papers, 1912-1951.
- Theodore Marburg papers, 1856-1940.
- Theodore Presser Company archive, 1814-2019.
- Theodore Presser Company collection.
- Theodore Presser Company. Theodore Presser Company archive, 1814-2019.
- Theodore Roosevelt Jr. papers, 1780-1962.
- Theodore Roosevelt papers, 1759-1993.
- Theodore Sherman Palmer papers.
- Theodore Stark Wilkinson Jr. papers, 1893-1971.
- Thomas A. Edison, Inc. Edison sheet music collection, 1830-1958.
- Thomas Bailey Aldrich papers, 1873-1901.
- Thomas Capek collection of materials relating to Czechoslovakia and Czech Americans, 1619-1953.
- Thomas Estévez Terry collection, 1918-1919.
- Thomas H. Ince papers, 1913-1964.
- Thomas H. Robbins papers, 1918-1971.
- Thomas Henry Carter papers, 1883-1917.
- Thomas James Walsh and John Edward Erickson papers, 1910-1934.
- Thomas James Walsh papers.
- Thomas Kimmwood Peters papers, 1896-1973.
- Thomas Mann papers, 1909-1947.
- Thomas Sidney Jesup papers, 1780-1907.
- Thomas Swann Harding papers.
- Thomas T. Craven papers, 1842-1969.
- Thomas Tileston Waterman architectural drawing archive.
- Thomas Tileston Waterman archive.
- Thomas Watt Gregory papers, 1896-1933.
- Thompson, LeRoy Feay, 1894-1996. LeRoy Feay Thompson collection 1918-2011.
- Thomsen, Alice Barnard, 1912- Baldwin-Ziegler Polar Expedition history. circa 1993.
- Thorndike, Edward L. (Edward Lee), 1874-1949. Edward L. Thorndike papers, 1900-1938.
- Thorndike, Edward L. (Edward Lee), 1874-1949. Semantic count of English words. 1938.
- Thorvald Solberg papers, 1882-1949.
- Ticknor, Benjamin Holt, 1842-1914. Benjamin Holt Ticknor papers, 1595-1935.
- Ticknor, Caroline, 1866-1937. Caroline Ticknor correspondence.
- Tilton C. Reynolds papers, 1851-1963.
- Tissandier, Albert, 1839-1906. Tissandier collection on the history of aeronautics. 1539-1929.
- Tissandier collection on the history of aeronautics, 1539-1929.
- Tissandier, Gaston, 1843-1899. Tissandier collection on the history of aeronautics, 1539-1929.
- Tissandier, Paul, 1881- Tissandier collection on the history of aeronautics. 1539-1929.
- T.J.J. See papers, 1887-1960.
- T.M. Cleland papers, 1880-1964.
- Tom J. Geraghty papers, 1923-1965.
- Tompkins, Daniel Augustus, 1851-1914. Daniel Augustus Tompkins papers, 1887-1920.
- Tonopah Mining Company records, 1901-1976.
- Tonopah Mining Company. Tonopah Mining Company records, 1901-1976.
- Torrey, Delia C. Delia C. Torrey papers.
- Tournemire, Charles, 1870-1939. Charles Tournemire collection, circa 1868-1962.
- Towers, John H. (John Henry), 1885-1955. John H. Towers papers, 1830-1989.
- Towers, Pierrette Anne. Pierrette Anne Towers papers.
- Towers, William M. William M. Towers papers.
- Tracy, George Lowell, 1855-1921. George L. Tracy collection of music manuscripts, 1877-1920.
- Train, Charles Russell, 1879-1967. Charles Russell Train papers, 1898-1967.
- Traubel, Anne Montgomerie, 1864-1954. Anne Montgomerie Traubel papers.
- Traubel, Anne Montgomerie, 1864-1954. Horace Traubel and Anne Montgomerie Traubel papers. 1824-1979.
- Traubel, Gertrude. Gertrude Traubel papers. 1880-1979.
- Traubel, Horace, 1858-1919. Horace Traubel and Anne Montgomerie Traubel papers, 1824-1979.
- Traubel, Horace, 1858-1919. Horace Traubel papers.
- Truxtun, Thomas, 1755-1822. Thomas Truxton papers.
- T.S. Palmer papers, 1877-1954.
- Tucker, George Edwin. George Edwin Tucker papers.
- Tucker, Mary Logan, 1858-1940. Mary Logan Tucker papers.
- Tumulty, Joseph P. (Joseph Patrick), 1879-1954. Joseph P. Tumulty papers, 1898-1969.
- Tunnicliff family papers.
- Tunnicliff family. Tunnicliff, Rigby, and Staton families papers, 1854-1990.
- Tunnicliff, Rigby, and Staton families papers, 1854-1990.
- Turner, Justin G. Justin G. Turner autograph collection, 1763-1968.
- Twitchell, Kenaston. Kenaston Twitchell papers. 1924-1991.
- Tyler Dennett collection relating to John Hay, 1861-1937.
- Tyler Dennett papers.
- Tyler, John, 1790-1862. John Tyler papers, 1691-1918.
- Tyler, Julia Gardiner, 1820-1889. Julia Gardiner Tyler papers.
- Tyler, Lyon Gardiner, 1853-1935. Lyon Gardiner Tyler papers.
U
- Ukrainian cylinder collection.
- Underwood, Norman, 1878-1974. Norman Underwood papers.
- Underwood, Wilbur, 1876-1935. Wilbur Underwood papers, 1895-1969.
- United States. American Commission to Negotiate Peace records, 1898-1919.
- United States. American Commission to Negotiate Peace. United States. American Commission to Negotiate Peace records, 1898-1919.
- United States Army Corps of Engineers. Progressive military maps of the United States.
- United States. Army. Division, 2nd. United States Army 2nd Division records.
- United States. Commission for the Construction of the Congressional Library Building. U.S. Commission for the Construction of the Congressional Library Building records.
- United States. Congress. Senate. Committee on Finance. United States. Congress. Senate. Committee on Finance minutes. 1863-1864.
- United States Constitution collection, 1773-1944.
- United States. Council of National Defense. Women's Committee. Council of National Defense (Washington, D.C.) Woman's Committee records. 1917-1918.
- United States. Federal Trade Commission. United States. Federal Trade Commission records. 1914-1934.
- United States. Forest Service records, 1902-1953.
- United States. Forest Service. United States. Forest Service records, 1902-1953.
- United States. National Advisory Committee for Aeronautics. United States. National Advisory Committee for Aeronautics records.
- United States. Office of Strategic Services. The Office of Strategic Services maps on microfilm collection.
- United States. Patent Office. U.S. Patent Office advertising prints and labels collection.
- United States. President's Research Committee on Social Trends records, 1924-1936.
- United States. President's Research Committee on Social Trends. United States. President's Research Committee on Social Trends records, 1924-1936.
- Untermeyer-Frost collection, 1913-1964.
- Untermeyer, Louis, 1885-1977. Untermeyer-Frost collection, 1913-1964.
- Ursinus, Oskar. Oskar Ursinus collection of aeronautical pictures.
- Ursinus, Oskar. Oskar Ursinus papers, 1908-1943.
- Ursinus, Oskar. Oskar Ursinus papers,1908-1943.
- U.S. Patent Office advertising prints and labels collection.
V
- Van Buren family papers.
- Van Buren, Lawrence, 1786-1868. Lawrence Van Buren family papers, 1721-1938.
- Van Deurs, George, 1901-1984. George van Deurs papers, 1851-1982.
- Van Devanter, Willis, 1859-1941. Willis Van Devanter papers, 1884-1941.
- Van Doren, Irita, 1891-1966. Irita Van Doren papers, 1920-1967.
- Van Pelt, Frank, 1890-1949. Frank Van Pelt collection 1917-1931.
- Van Voorhis, Daniel, 1878-1956. Daniel Van Voorhis correspondence and reports. 1911-1913.
- Van Voorhis, Edith Burbank, 1882-1955. Edith Burbank Van Voorhis correspondence. 1911-1913.
- Van Voorhis family. Burbank-Van Voorhis families papers, 1814-1913.
- Van Voorhis family papers.
- VanderPoel, Halsted B. Halsted B. VanderPoel literary collection, 1815-1929.
- Vaudeville and minstrel photograph collection, circa 1910s-1940.
- Veblen, Oswald, 1880-1960. Oswald Veblen papers, 1881-1960.
- Vernon Boyce Hampton papers, 1872-1971.
- Vernon Duke collection, 1918-1968.
- Veterans History Project collection (Library of Congress). (25)
- Veterans History Project (U.S.). Andrew Gbur collection, 1916-1992.
- Veterans History Project (U.S.). Charles Edmund Worth collection, 1917-1919.
- Veterans History Project (U.S.). Clyde Wilbur Russell collection, 1917-1919.
- Veterans History Project (U.S.). Edgar D. Andrews collection 1917-1974.
- Veterans History Project (U.S.). Edward Henry Loudenbeck collection, 1917-1919.
- Veterans History Project (U.S.). Ewing Harry Miller collection, 1917-1923.
- Veterans History Project (U.S.). Frank Van Pelt collection 1917-1931.
- Veterans History Project (U.S.). George Washington Pearcy collection, 1915-1949.
- Veterans History Project (U.S.). Harold Benjamin Graham collection 1917-2012.
- Veterans History Project (U.S.). Howard Elbridge Robbins collection 1918.
- Veterans History Project (U.S.). John Carroll Parent, Sr., collection 1907-2015.
- Veterans History Project (U.S.). John McRae Kennelly collection 1917-1919.
- Veterans History Project (U.S.). Joseph Royston Gathings, I, collection, 1914-1936.
- Veterans History Project (U.S.). Kenje Ogata collection, 1924-2002, 2008, 2011.
- Veterans History Project (U.S.). Leo Joseph Bailey collection 1917-2008.
- Veterans History Project (U.S.). LeRoy Feay Thompson collection 1918-2011.
- Veterans History Project (U.S.). Louis Milton Ronsheim collection, 1914-2000.
- Veterans History Project (U.S.). Personal Narratives of the Forced Removal and Incarceration of Japanese Americans During World War II.
- Veterans History Project (U.S.). Peter Shemonsky collection, 1899-1970.
- Veterans History Project (U.S.). Philip E. Scholz collection, 1918-1920.
- Veterans History Project (U.S.). Thomas Estévez Terry collection, 1918-1919.
- Veterans History Project (U.S.). Wallace E. Rand collection 1893-1919.
- Veterans History Project (U.S.). William Hamilton Felton, Jr., collection, 1917-1918.
- Veterans History Project (U.S.). William Hurn, Jr., collection 1917-2014.
- Veterans History Project (U.S.). William Sylvanus Morris collection, 1917-2016.
- Vetter, Helen Cook. Helen Cook Vetter papers. 1910-1977.
- Victor Hammer collection.
- Victor Herbert collection, 1880-1939.
- Victor Murdock papers, 1824-1971.
- Victor S. Clark papers, 1827-1944.
- Vincent Youmans music manuscripts, 1920-1957.
- Vinnie Ream and R.L. Hoxie papers, 1853-1937.
- Vinton Freedley collection, 1920-1949.
- Vinton Freedley papers, 1865-1960.
- Visual materials from the Blackwell family papers.
- Visual materials from the Booker T. Washington papers. (2)
- Visual materials from the Daniel Carter Beard papers.
- Visual materials from the Edward L. Bernays papers.
- Visual materials from the Ham, Connelly, Parks and Snodgrass families.
- Visual materials from the Harold L. Ickes papers.
- Visual materials from the Janet Flanner and Solita Solano papers.
- Visual materials from the Moral Re-armament records. (2)
- Visual materials from the National Association for the Advancement of Colored People records (Library of Congress).
- Visual materials from the National Woman's Party records. (2)
- Visual materials from the Walt Whitman papers in the Charles E. Feinberg collection.
- Vitte, S. I︠U︡. (Sergeĭ I︠U︡lʹevich), graf, 1849-1915. Graf Sergeĭ I︠U︡lʹevich Vitte letter. 1893.
- Voge, Adolph Law, 1875-1945. Adolph Law Voge papers, 1915-1939.
- Volkogonov, D. A. (Dmitriĭ Antonovich). Dmitriĭ Antonovich Volkogonov papers, 1887-1995.
- Von Recum family. Howard-von Recum family papers, 1869-1972.
- Von Recum family papers.
- Von Recum, Marie Ernestine Howard, Baroness, 1868-1954. Marie Ernestine Howard von Recum correspondence and diaries.
- Von Tilzer / Gumm collection, 1878-1959.
- Von Tilzer, Harry, 1872-1946. Harry Von Tilzer and H. Harold Gumm papers, 1878-1959.
- Vozdushnye puti records, 1923-1967.
- Vrooman, Carl Schurz, 1872-1966. Carl Schurz Vrooman papers, 1872-1975.
- Vrooman, Frank Buffington, 1862-1951. Frank Buffington Vrooman papers.
- Vrooman, Hiram, 1871- Hiram Vrooman papers.
- Vrooman, Julia Scott. Julia Scott Vrooman papers.
- Vrooman, Walter, 1869- Walter Vrooman papers.
W
- W. Averell Harriman papers, 1869-2001.
- W. Beverly Carter papers, 1924-1997.
- W. Cameron Forbes papers, 1904-1946.
- W J McGee papers, 1880-1916.
- W. Morgan Shuster papers, 1900-1964.
- W. Somerset Maugham papers, 1897-1966.
- W.A. Croffut papers, 1774-1933.
- Waddy B. Wood architectural drawing archive.
- Waddy B. Wood archive.
- Waddy B. Wood papers, 1885-1941.
- Waddy Butler Wood papers.
- Wade Hampton family papers, 1855-1935.
- Wade, Joseph Sanford, 1880-1961. Joseph Sanford Wade papers, 1898-1955.
- Wadsworth family. James Wadsworth family papers, 1730-1959.
- Wadsworth family papers.