Cooper's papers fall into two almost equal categories: teaching materials and research materials. The teaching materials are largely files of examination questions, with Cooper's notes and drafts and occasionally some worked answers by students. These cover undergraduate courses at McGill and Sir George (1936-1969), special subjects, Ph.D. comprehensives, graduate and honours papers (1937-1967), historical method and philosophy of history (1937-1961), and McGill and Sir George courses in Latin American history (1937-1961). Course materials include an outline for an extension course in Canadian history (ca 1950), and notes for a course in 18th century diplomacy. A file of correspondence on History Department business (1952) largely concerns a doctoral thesis for which Cooper was external examiner. Other files contain lists of graduate student papers (1964-1966). Cooper's research files contain his notes, and occasionally some correspondence, on Latin American and West Indian history, early American historiography, banking and shipping in Québec and the history of higher education in the United States and Québec. His notes on historiography and 18th century diplomacy were probably gathered for the courses he taught in those subjects, and there are about 20 cm of index cards on mercenary regiments in the Crimea. There is a file of correspondence with the British Museum concerning Colonial maps, and one of correspondence and memoranda on Cooper's proposal for a history of McGill (1949). As well, there is a file of correspondence relating to the Klieforth Prize and the publication of Cooper's winning manuscript (1947-1949). Finally, a copy of Cooper's draft article for the Dictionary of Canadian Biography on James and Andrew McGill reflects his interest in Montréal and McGill history.

The fonds contains notes on British political history.

Fonds contains one student notebook of notes and coloured drawings of slides for a pathology course

The fonds consists mainly of a bound notebook that Mussen kept with notes on his experimental investigations. Includes mounted photographs of brain specimens and animal subjects. Fonds also contains loose manuscript notes and two overhead projector transparencies.

The fonds contains Dr. Jacques' journal of medical accounts receivable entered in an account book issued with blank pages and bound in half suede with green cloth boards. The account book was kept between November 1879 and January 1881. A title handwritten on a paper label on the cover reads "Journal pour 1879-1880-1881." The author's full name comes from within the journal (L. A. George Jacques, M. D.) and from Lovell's Montreal directory for 1881-1882 (Louis A. George Jacques, M. D.). Laid in at p. 207 is an ink blotter featuring pharmaceutical advertising for Glyco-Heroin (Smith).

Fond contains solely glass slide negatives. Many slides depict the McGill campus between the years 1918-1921, including the Strathcona Medical Building, as well as the Royal Victoria Hospital. Other subjects include street scenes taken in Montreal after the end of the First World War and the Lockharts' family life during the early 1920s.

Fonds comprised of two envelopes addressed to Mr. Alex Sherman, Plum Hollow, Ontario , postmarked March 27, 1912 and February 26, 1913, and containing promotional advertisement materials for Bodi-Tone medicine. Included are "cured" patient testimonials, details on how to mail-order a box of Bodi-Tone medicine, and a signed letter from Bodi-Tone President, Sidney S. David. Fonds also includes purchase the receipt from Alexander Books, Ancaster, Ontario.

A large portion of the collection is concerned with the growth of the Medical Library at McGill. Other than the Catalogue of Books from the Library of the Medical Faculty of McGill College which dates from 1845, the earliest preserved records are the handwritten Library Committee reports of Dr. Francis Shepherd, dating from 1880. The textual material includes early library reports, surveys, information about library staff, finance, gifts, procedures, as well as information regarding the Osler Library and departmental building plans and renovations. The collection also includes correspondence, notes, photographs, and artifacts associated with 'McGill Medical Men' including: James "King" Cook, Robert Palmer Howard, William Wright, Robert Lea MacDonnell, Richard Lea MacDonnell, Herbert Stanley Birkett, and others. There are many reprints in the collection – some bound into volumes, and many that include signatures and written notes. The collection also includes photographs, scrapbooks, and glass lantern slides (some of which are from World War One), books, and theses. The Medical Library's accession records, index cards, and journal cards are also preserved in the collection, still housed in their original catalogue drawers (see Series 7). The collection includes various announcements, university calendars and directories related to the Faculty of Medicine, as well as communication, meeting minutes, and essays belonging to the McGill Medical Society (1884-1907), the McGill Reporting Society (1926-1951), and the Montreal Dermatological Society (1930-1951). Lastly, the collection includes miscellaneous textual materials related to McGill and the Faculty of Medicine, for instance McGill student attendance cards from 1828-1872 (with course name and professor details).

The fonds illustrates Dr. McNaughton’s work as a neurosurgeon and consists of correspondence, letters, articles, newspaper clippings, obituaries, photographs, slides, research material and notes, course material, annual reports and drafts of his work. The fonds is divided into three (3) series.

"Professional Papers, 1964-7, 3 cm." Correspondence, specifications, notes and clippings relating to the design of the Manoir Comeau in Baie Comeau, PQ (1966-7) and alterations to the Canadian Society for the Prevention of Cruelty to Animals in Montreal (1964-5), comprise the archive's holdings of this architectural firm.

"Documents professionnels, 1964-1967, 3 cm." De la correspondance, des cahiers des charges, des notes et des coupures de presse se rapportant aux projets du Manoir Comeau à Baie-Comeau (Québec) (1966-1967) et des modifications à l'immeuble de la SPCA à Montréal (1964-1965).