Allen Weir Freeman was a physician and Johns Hopkins University of Public Health Administration born in 1881, and was brother of the author, Douglas Southall Freeman. Collection consists of letters to and from Freeman family members (dating 1904 - 1907) while Allen Weir Freeman was a medical student and during the start of his career.

Douglas Southall Freeman (1886 – 1953) was an American historian, biographer, newspaper editor, and author best known for his multi-volume biographies of Robert E. Lee and George Washington. The collection spans the years 1902-1911, and consists primarily of correspondence between Freeman and his parents.

E. Emmet Reid (born 1872) was a professor of chemistry at Johns Hopkins. The collection consists of reprints, extensive student notes, lecture notes, correspondence, and patents dating from 1889 to 1974.

James D. McCabe, Jr. (1842-1883) was a Confederate supporter and a popular writer of more than 30 works including histories, biographies, and plays. The collection consists of letterbooks, unpublished manuscripts, and photographs dating from 1862 to 1881.