The Helen Neilson fonds consists of a variety of research notes used as source material for her book on Macdonald College. It includes statistics on students in Household Sciences, as well as names of directors and staff. There are copies of Diaper Dell Doings (1946-1948), Diaper Dell Association pamphlet, which reflects the housing development constructed by McGill University after World War II for the use of student veterans and their families at Macdonald College. Included are also newspaper clippings, notes on teaching and research (1971-1973), and photocopies of sketches of the coat of arms of Macdonald College. There is some correspondence relating to the proposed move to McGill’s downtown campus, the establishment of the provincial CEGEP John Abbott College at Macdonald and the 50th reunion of class 1912 (1917-1952).

Included are Boa's photograph 1906, six certificates, including her Normal School diploma, 1903-1906, and a letter offering her a scholarship in the Faculty of Arts from the University Registrar, 1905.

Student assignment "Engineering Reports 136" completed in 1944.

The fonds contains original and typescript letters, manuscript notes, newspaper clippings, journal extracts, reminiscences and more, assembled by Harvey Cushing chiefly between 1920 and 1924 during the course of his research for the biography of William Osler. For the biography, Cushing collected and retyped over 7500 pieces of Osler's correspondence, among which are some original letters.

The fonds is separated into three series: Manuscripts, Working Notes and Osler's Correspondence. It also contains photographs, annual reports, publications, clippings, one watercolor painting, one postcard. Osler's correspondence is further arranged in three subseries based chronologically.

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.

The fonds documents Swain's career at the Deputy Minister of Indian and Northern Affairs Canada, including his role in the standoff at Oka, Quebec, in 1990. One series also consists of research materials collected during the writing of Swain's 2010 books, Oka: A Political Crisis and its Legacy.

"Architectural drawings, 1957-76, 161 drawings."
The archive holds drawings for seven projects.
Beardmore Building, 417 rue St. Pierre, Montreal, Que., 3 drawings by I. Nicolas from 1936, 11 drawings by Harry Stilman. The building was originally designed in 1911 by Howard C. Stone.
New Building for Canadian Vickers Ltd., 4970 Notre Dame Street, East, Montreal, Que., 1963-64, 12 drawings
Davis YM-YWHA Building, Cote St. Luc, Que., 1965-66, 16 drawings
Pavilion of Judaism, Expo '67,1966-67, 46 drawings
YM-YWHA Building Chomedy Branch, Laval, Que., 1969-70, 35 drawings
Yeshiva Gedola Mercaz Hatorah, Deacon Road, Montreal, Que., 1973, 18 drawings
Alterations to 180 St. Catherine Street East, Montreal, Que., [La Patrie Building], 1973-74,76, 19 drawings including plan of property

"Photographs"
Beardmore Building, 417 rue St. Pierre, Montreal, Que., 3 photographs
Alterations to 180 St. Catherine Street East, Montreal, Que., [La Patrie Building], 13 photographs

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.”

Fonds contains correspondence, including letters and postcards from Sir William Osler, clippings and two photographs.

"Architectural Drawing, n.d., 3 drawings." The archive contains an ink on paper drawing of architectural details.

"Dessin architectural, s.d., 1 dessin." Le fonds contient un dessin au trait de détails architecturaux.