Prominent family in nineteenth century national politics. Correspondence, speeches and writings, legal files, financial records, historical research files, printed matter, and estate records documenting principally the careers of Francis Preston Blair, journalist and presidential advisor, Frank P. Blair, soldier and politician, and Montgomery Blair, lawyer and cabinet officer.

Financier and philanthropist. Correspondence, letterpress books, financial papers, newspaper clippings, printed matter, and other papers relating primarily to Corcoran's business and banking interests and philanthropic efforts.

Professor of history. Correspondence and other material relating chiefly to French spoliation claims; and an autograph collection.

United States cabinet official and representative from Massachusetts, army officer, diplomat, and lawyer. Correspondence, memoranda, diaries, journals, writings, speeches, notes, notebooks, legal file, business papers, biographical material, newspaper clippings, printed material, maps, photographs, and other papers reflecting Cushing's role in national and international affairs of the mid-nineteenth century.

New England family of landowners, planters, and politicians. Primarily correspondence from members of the Cutts family relating to family matters with reference to political and social affairs in the nineteenth century in the United States. Also includes newspaper clippings, photographs, certificates, poems, and genealogical material.

Naval officer. Correspondence, military records, financial papers, printed material, illustrations, and other papers concerning Goldsborough's career in the United States Navy.

Journalist, politician, entrepreneur, and industrial promoter. Correspondence, writings, maps, and printed matter reflecting Green’s political service and views on Southern culture.

Clergyman and author. Correspondence, a journal, pamphlets, and other material related to Gurley's role as an officer of the American Colonization Society and as an advocate for Black American emigration and colonization of Liberia, predominately his activities prior to the American Civil War.

Correspondence, biographical material, business records, writings, legal documents, memorabilia, and genealogies of the Hale, Everett, Hill, and Sears families. The collection consists primarily of the papers of Nathan Hale (1784-1863), pioneer railroad builder and journalist; Alexander Hill Everett (1790-1847), diplomat and editor; and Edward Everett Hale (1822-1909), author and Unitarian minister.

Jurist and legal commentator. Correspondence, including family letters, journals of official and personal travels, diplomas, and commissions pertaining primarily to Kent's service as judge of the New York supreme court and as chancellor of the New York court of chancery.

Army officer and governor of New Jersey. Correspondence, diaries, military papers, memoranda, telegrams, notes, writings, printed copies of speeches, articles, and books relating primarily to McClellan's Civil War service, particularly the Yorktown and Maryland campaigns.

U.S. representative from Ohio, U.S. postmaster general, associate justice of the U.S. Supreme Court, and Ohio Supreme Court associate justice. Correspondence, financial data, docket book, printed matter, a file of reports, opinions and briefs arranged by case name, and other papers relating to McLean’s service as postmaster general and Supreme Court justice.

U.S. senator and representative from Virginia. Correspondence, journals, diaries, draft of Rives's incomplete "Life and Time of James Madison," and drafts of speeches, novels, and an unpublished autobiography by Rives. Includes papers of Thomas Walker (1715-1794), U.S. Army officer, guardian of Thomas Jefferson, physician, and explorer; and of Walker's son, Francis (1764-1806), U.S. representative and lawyer from Virginia.

Manufacturer, political leader, and United States senator from Rhode Island. Correspondence, family letters, memoranda, legal documents, account books, photographs, and printed matter relating to Simmons's cotton and yarn manufacturing enterprises and to public matters, including the tariff, Thomas Dorr and the Dorr Rebellion of 1842, the nomination and election of Abraham Lincoln as president, and social, economic, and political conditions in Rhode Island.

Historian, librarian, and archivist. Correspondence with American scholars and librarians concerning the location of Duff Green papers and transcripts and photostats of the correspondence of Green and others relating to American-British diplomacy, with emphasis on Green's missions to England. Also includes notes and memoranda from published and unpublished sources collected for the purpose of writing an account of Green's diplomatic career.

Andrew Stevenson (1785-1857), U.S. representative from Virginia, speaker of the House of Representatives, and minister to Great Britain; and his son, J. W. Stevenson, governor of and U.S. senator from Kentucky. Chiefly general and diplomatic correspondence, legal papers, account book, speeches, printed matter, and other papers of Andrew Stevenson documenting his diplomatic service.

Lawyer, editor, and Librarian of Congress. Correspondence, memorandum books, miscellaneous writings, and legal documents pertaining mainly to Watterston’s duties as Librarian of Congress and his life and activities in Washington, D.C.