Campbell's papers contain some students materials, a small amount of correspondence, and commemorative materials associated with his retirement in 1950 and his 75th birthday in 1961. Student materials consist of mimeographed lecture notes for a course by Dr. J.C. Meakins, with Campbell's handwritten notes. The subjects covered are heart and lung diseases and the nervous system. Correspondence consists of a letter from Lady Drummond offering the services of the Canadian Red Cross Society to Campbell, 1917. A volume of photographs and biographies of doctors and nurses connected with the Department of Obstetrics and Gynaecology at the Montreal General Hospital, 1883-1950. was assembled by Campbell himself. Also included is 4 cm of correspondence and questionnaires, largely from former interns and residents who had served under Campbell's regime. An album of letters from former colleagues and friends commemorates Campbell's 75th birthday, 1961.

The fonds consists of Dr. Campbell's partially edited and unfinished autobiography, which he began writing in the 1960s and continued until the time of his death in 1970. The work covers the period from, approximately, 1831 to 1932. Additionally, the fonds includes the medal Dr. Campbell received for serving as Past President of the Montreal Medico Chirurgical Society, 1952-53.