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.
Kent Roberts Greenfield (born 1893) was Professor of History at Johns Hopkins University and chief architect of the official United States Army History of World War II. The collection consists of correspondence, lecture notes, student notes, student papers, writings and research notes, printed material, and photographs and postcards. The bulk of the material covers his work as an army historian (1942-1945, 1946-1958).