Henry W. Bragdon (1906-1980) was an author and instructor of history. Collection consists of researh material collected by Bragdon for his published volume, "Woodrow Wilson: The Academic Years." Bragdon is thought to have collected the research from approximately 1945 to the time of the book's publication in 1967.

Herbert Baxter Adams (1850-1901) was an American educator and historian. The collection consists of material spanning 1851-1903. The materials include correspondence, lectures, writings, research material, files related to Johns Hopkins University, the United States Bureau of Education, the American Historical Association Committee of Seven, personal files, and prints and photos.

John H. Finley was a journalist and educator who received his M.A. in history from Johns Hopkins University in 1890. The collection consists of a two page typescript letter signed by John H. Finley regarding Ground Under Our Feet, Richard T. Ely's autobiography, dated 1938.

John Martin Vincent (1857-1939) years was a Professor of European History at Johns Hopkins University. This collection consists of correspondence, scrapbooks, subject files, and personal materials ranging in date from 1881 to 1925. The bulk of the material is correspondence dating from 1900-1910.

The papers in the Slack Family Collection have been artificially arranged and consist largely of correspondence collected by Susan Brune Randall and her daughter, Elizabeth Randall, to form an autograph collection spanning 1853-1928. The collection does not include any significant information regarding family or business interests.