Lewis' papers consist of a few scattered items apparently assembled as part of his research for Royal Victoria Hospital 1887-1949, Montreal, McGill University Press, 1969. Newspaper clippings, 1932-1964, deal with Montréal and R.V.H. history. Lewis' correspondence, 1965-1971, with the Dominion Archivist, the McGill Archives, Dr. John Cleland, Mrs. Ellen Scrimger and others discusses various historical materials connected with the hospital. Also includes notes on material in the R.V.H. archives, some hospital newsletters and photographs, and a few reprints and addresses.

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.

These papers almost exclusively consist of records of his research and publications. His publications files contain drafts of various scientific papers, largely on secretions, correspondence regarding the reception of Die Aussere Sekretion der Verdauungsdrusen (1928) and negotiations surronding the publication of the Pavlov biography, and a biographical file containing a curriculum vitae, bibliography, and correspondence concerning appointments, honorary degrees, (1923-1948). Research materials comprise six volumes of reports on laboratory experiments and a file of daily laboratory reports (1923-1943). Babkin's professional correspondence with scholars and scientific associations covers the years 1928 to 1943. Most of the letters, incoming and drafts of outoing, concern research problems, consultation on draft articles by colleagues, and Babkin's own publications. There are also negotiations for speaking engagements, and a scattering of items on Babkin's social involvements, e.g. relief for Russian refugees, and letters from students.

Most of this collection consists of the selected incoming personal correspondence of Caroline H. Pelton, 1846-1873, and some correspondence of members of her family, 1842-1905. Also included are two diplomas awarded to Caroline Pelton from the McGill Normal School, 1860 and 1861 and family photographs. There are also selected financial records of St. George's Church, Montréal, 1882-1885.