Family members include author and suffragist Alice Stone Blackwell (1857-1950); her parents, Henry Browne Blackwell (1825-1909) and Lucy Stone (1818-1893), abolitionists and advocates of women's rights; her aunt, Elizabeth Blackwell (1821-1910), the first woman to receive an academic medical degree; and Elizabeth Blackwell's adopted daughter, Kitty Barry Blackwell (1848-1936). Includes correspondence, diaries, articles, and speeches of these and other Blackwell family members.

Lawyer, state legislator, and U.S. representative from Virginia. Correspondence, legislative bills, resolutions, newspaper articles, and other papers relating chiefly to political affairs in Virginia and Flood’s legislative career.

Naval officer and United States representative from Alabama. Correspondence, memoranda, speeches, lectures, articles, reports, notes, analyses, naval orders, press clippings, photographs, and other papers relating chiefly to Hobson's naval career and to his efforts on behalf of prohibition, restrictions on international drug trafficking, and opposition to the Franklin D. Roosevelt administration.

Governor of New York, secretary of state, and chief justice of the United States. Family papers, correspondence, speeches and biographical writings, subject files, notes, scrapbooks, clippings, and other printed and miscellaneous matter relating principally to Hughes's political and judicial career and his service on various international bodies and commissions.

Clergyman, reformer, and Southern secretary of the National Child Labor Committee. Correspondence, telegrams, speeches, articles, notes and drafts of a biography of St. Clair McKelway, longtime editor of the Brooklyn Eagle and uncle of Alexander, family papers, financial material, printed matter, a scrapbook, and other papers relating mainly to child labor legislation and to the McKelway family.

Chiefly responses to queries about international liquor policies and regulations collected from consuls general and other foreign representatives between 1931 and 1933 by Grace McClure Dixon Cogswell Root (Mrs. Edward Wales Root), research director of the Women's Organization for National Prohibition Reform, which advocated repeal of the Eighteenth Amendment.