The bulk of Girdwood's papers concern his work in forensic medicine. Other materials cover his research in photography, and his general medical and scientific interests. Girdwood's career as medical-legal consultant is documented by 24 cm of his notes and reports, together with some correspondence, on four poisoning trials: People vs Emma Davis (Malone, N.Y., 1881), Queen vs Provencher and Boisclair (Sorel, 1867), Queen vs Joseph Ruel (St. Hyacinthe, 1868), and Queen vs David Prevost and Damase Brunet (L'Orignal, 1881). There are also coroner's autopsy reports and notes for four cases; Girdwood's memoires of ten cases on which he served as consultant; Rogers and Girdwood's submission to the Home Office, London, on the strychnine test, together with letters to Lancet and the Times on the same subject; and notes on the counterfeiting of stamps (1893). His interest in medical photography is reflected in lists of X-rays taken by him (1898-1899) and reprints of three articles. His general scientific and medical activities are represented by a scrapbook of newsclippings on cholera (1854), a lecture on gold presented to the Natural History Society of Montréal (n.d.), essays on strychnine (1864) and water filtration (1869), a review of a textbook in physiology (1864) and some reprints, including convocation addresses to the Medical Faculty. Finally, there is a manuscript copy of an address to the graduating class of Applied Science in 1881 and a small scrapbook of printed articles by Girdwood's father, G.F. Girdwood, M.D.

MacIntosh's involvement with the Medical Research Council of Canada is documented by correspondence, agendas and minutes (1960-1962) concerning grant applications and administrative affairs, particularly the Advisory Committee on Policy.

Tobin's papers consist of a scrapbook and photo album containing programmes, menus and newspaper clippings concerning the "King Cook" celebrations, 1911-1927, newspaper obituaries and photographs of Medical Faculty professors, programmes for social events of the Medical Society, Pharmaceutical Society and the McGill Employees Association (of which Tobin was secretary) and letters of recommendation from the Medical Students Society, 1921-1931.

Scott's papers comprise notes, photographs, reprints and some correspondence on Biblical archeology, particularly weights, seals and coins (ca 1920-1966).

This small file of Van Horne's correspondence concerns McGill affairs between 1901 and 1915. Apart from routine notices of Governors' meetings, there are appeals from professors for funds to purchase equipment, collections and scholarships, letters from Sir William Peterson on the appointment of Carrie Derrick as Professor of Botany, from E.B. Greenshields on the University Magazine and from others, including Sir William Macdonald, Helen R.Y. Reid and R. Tait Mackenzie.

This archive contains letters and copies of letters, from the Wisdom sisters to one another, describing their experiences at Royal Victoria College, 1900-1908. There is also a letter from Stephen Leacock, accepting an invitation to deliver an address, and two from Hilda Oakeley to Mrs. Wisdom. Programmes (particularly of R.V.C. plays and sports events), clippings, and photographs are also included. There are also course notes for C.W. Colby's Renaissance history and William Caldwell's history of modern philosophy.

Selected papers of the Hart Family include a diary kept by Bernard Samuel Judah (an in-law of the Harts) during a voyage to the United States to visit his son Samuel, 1827-1828; a Jewish calendar belonging to Alan Judah Hart with notices of family births and deaths, 1903-1930, and few diary entries, 1917-1919; a few items of correspondence of Alan Hart and his family relating to family history, 1923-1972; some notes on family history, and 25 portraits (photographs, silhouettes) of family members from 1823 to ca 1960.

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.

Most of this material concerns the last illness and death of Robert Harvey Warden, and comprises letters of sympathy to himself and his wife, and following his death, condolences to his wife and children. The letters are from personal friends as well as from Presbyterian bodies. Printed obituaries are also included. Letters of condolence to Mrs Warden on the death of her daughter Lila Dunton are likewise accompanied by newspaper obituaries, 1908.

The major record of the McGill Chapter's early years is a register containing members' signatures, 1911-1969, and minutes from 1912 to 1932; a second minute book covers the period 1960-1969. Approximately two-thirds of the papers are secretary's files from 1961 to 1978 containing membership lists, correspondence concerning prospective members, circular letters announcing meetings, and correspondence with the headquarters of AOA. There are also receipts for initiation fees from 1954 to 1969.