Stansfield's student notebooks comprise three volumes of the geology lectures of Dr. Marr (1904). Research notes include laboratory records and a draft article on dolomite, and scattered notes on palaeontology and stratigraphy. His work as a teacher is documented by lecture notes on economic geography for a course given to McGill commerce students (1911).

The records of the Montreal-Ottawa Conference of the United Church are arranged in the following series:

1. Denominational records prior to Union, 1824-1925
   Records of each of the three parent denominations follow the same general pattern. There are minutes, usually printed, of the national executive body, and original minutes of the local unit corresponding to the geographical boundaries of the present Conference. Papers of associations at this level generally include the files of Sabbath School associations, ministerial associations, missionary societies, and theological colleges. A number of interdenominational clergy and mission groups are also represented; while a special series of correspondence, minutes, and conference reports covers the debates concerning union, 1906-1925. The Methodist materials begin in 1824, and the Presbyterian in 1841, and the Congregational in 1842.

2. Conference records, 1925-
   Minutes of the Conference, and of the Conference-based Women's Missionary Society, Women's Union and United Church Women, are extant from the time of Union. The Montreal Presbytery maintains a record of proceedings, and supports a number of groups and associations (Minister's Wives Association, young peoples' groups, camps, missionary societies, United Church Women) whose work is documented by minutes, financial records and, occasionally, correspondence files. Also included are records of the Joint Theological Colleges of McGill University and of the United Theological College, 1912-1948.

3. Local Churches, 1832-
   Many local churches retain their historical records, including civil registers. The Archives' holdings include records of approximately 75 individual congregations in the Montréal and Québec-Sherbrooke Presbyteries, consisting of minutes of governing bodies, communion rolls, minutes of organizations, accounts, annual reports, and occasionally photographs and architectural drawings. The most substantial and significant records are those of the Erskine and American (from 1832), including records of Canada Education and Home Missionary Society, 1833-1848, St James (from 1820), Zion Congregational (from 1832), and Odelltown (from 1829) congregations.

4. Missionary Work in French Canada, 1848-1861, 1876-1969
   The importance to the United Church and its parent denominations of mission work in French Canada is documented by minutes of the French Canadian Missionary Society (1848-1861), and papers, including sermons, notebooks and correspondence of the French Evangelical Church of Canada (1876-1969).

5. Papers of individuals, 1822-1925
   Papers of individuals include the correspondence, essays and sermons, 1870-1917, of Calvin E. Amaron; the Bieler Family; J. Armitage Ewing (largely concerning the controversies surrounding Union in 1925); William Mair, sermons, 1827-1855; Richard Robinson, diaries, personal records, sermon outlines, 1857-1912; Henry Wilkes, 1822-1878, and others.

The fonds consists of two bound volumes of notes on Endocrinology (some handwritten, some typed) from 1938-1939 and 1941-1942 while Masson was a PhD candidate at McGill University. Lectures given by: J. S. L. Browne, H. Selye, D. L. Thomson, C. F. Denstedt, C. Lyman Duff, C. P. Leblond, D. McEachern, R. L. Noble. Also included are three volumes of published works.

The fonds also consists of three bound volumes of Masson's published work from various medical journals (published in France, Canada, and USA) between 1932-1959. The articles are mostly in English, and some are in French.

The fonds documents John Bell's activities related to his medical studies at McGill in Surgery, Materia Medica and the Institutes of Medicine, as well as his work as a private physician in Montreal. The fonds consists of notebooks, a photocopy of his MS McGill medical thesis, letters from his personal and professional life, one of his medical kits, receipts from merchants, various subscriptions, societies and clubs. The fonds also contains various reprints of Bell's articles, including the 1878 article, "Case of Diphtheria, Acute Laryngeal Symptoms", as well as the City of Montreal's "Mortality of Montreal" – a list of all deaths in Montreal in January 1878.

The collection consists of documents pertaining to Dr. H. S. Birkett's medical activities, including 117 bound volumes of patient records (1889-1942), medical notebooks (1893-1896), bound RVH reports (1894-1938), RVH charts (1901-1920) and registers (1899-1917). There are also various letters addressed to Mr. and Mrs. Birkett, a manuscript, newspaper clippings, various degrees and medical association certificates, as well as photographs of H. S. Birkett's personal life and professional life at McGill and elsewhere. The collection also includes various artifacts collected by H. S. B, including military and medical memorabilia collected by H. S. Birkett.

Fonds consists principally of one three-ring loose leaf holograph notebook written in pencil and ink. The notebook details cases that Morton worked on during the period of February to May, 1935, while at Guy’s Hospital in London. Fonds also includes a letter from real estate broker William E. Speed to Capt. W. B. Holms concerning a property rented to the Mortons; single blank leaf with letterhead of C. S. Morton (Harry Stafford Morton’s father); New Year’s card from Earle C. Phinney; and newspaper clipping of editorial by Sir William Osler, “Promethean Gift of the Century Physical Suffering Diminished.”

The fonds includes Dr. Archibald’s correspondence and reports pertaining to the Ministry of National Defence, 1940-1945; certificates and diplomas; and a photograph. The correspondents include family members, Dr. John McCrae and Sir William Osler. There is also a draft of a book on wound ballistics and gas gangrene; an Army Field Service book, 1916 and two notebooks on internal and external pathology, “matiere medicale et therapeutique,” and “medecine legale et toxicologie,” 1895.

The Sir William Osler Collection, distinct from the Bibliotheca, is an extensive archival holding of Osler's correspondence (including eighteen hundred original letters), daybooks, accounts, engagement books, legal documents, book invoices, membership certificates, notebooks, lectures, addresses, newspaper clippings, photographs, books with manuscript additions, and miscellaneous loose items formerly inserted into individual books in his library. The collection also contains various family papers, including correspondence of Lady Grace Revere Osler and Edward Revere Osler.

Fonds contains G.D. Gibb's manuscript medical case books. The fonds includes six volumes originally numbered 3, 7, 8, 9, 11, 12, each of them with an index and Gibb's bookplate.

Fonds documents J.B. Johnston's professional activities from 1839 to 1859. It also includes his medical thesis De delirio tremente, Edinburgh, 1833. The fonds contains a logbook with notes, summaries of readings, reports of unusual medical cases and obstetrical list, and his medical thesis.