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).

The Hellmuth Wolff Organ Collection consists primarily of organ plans, pamphlets, photographs, books and periodicals, and personal correspondence. The majority of these documents are associated with or represent one of the fifty organs in Wolff’s opus. In addition to depicting Wolff’s instruments, the collection of organ plans also includes Wolff’s drawings for proposed but not-constructed organs, plans by other organ builders, and plans drawn by Wolff that are based on historical models and treatises by writers such as Dom Bédos. Of the photographs, most are associated with specific Wolff organ projects and represent a span date of the late 1960s to the early 2000s. Also in the photograph collection are images of historical organs in Europe, which Wolff presumably used in modelling and designing several of his instruments, as well as images associated with other organ projects by builders such as Casavant Frères, Karl Wilhelm, and Rieger, all of whom Wolff worked with before establishing his own workshop in Laval. The collection of pamphlets includes programs, program notes, and concert series information for several of the Recitals and concerts performed on Wolff’s instruments. Of the periodicals and books, titles include The American Organist, Choir & Organ, and Orgelforum. Also in the collection are several three-dimensional models, or maquettes, of Wolff organs.

Fonds comprises photocopies of three works for the piano, which Blume described as "meine gesammelten Werke" ("my collected works"). Two of these – an arrangement of the "Emperor Waltz", and "Variations on an American Folk-Song" – were written in the Sherbrooke Internment Camp in 1942. The third, "Picture book for Veronika" was written later that year in Toronto.

Collection contains letters, memorial, other documents dealing with the cultivation of hemp in Lower Canada, including those of Jesse J. P. Pennoyer.

Fonds shows Henry Beaumont Small's activities as a medical student through his admission cards for his complete medical formation. It contains 43 admission cards signed by or printed for the teachers, among them William Osler.

The fonds consists of the graduating class photograph, comparative medicine, 1895 and diplomas of H.D. Clark.

Ellis's 'Notes of my journey to France in 1828' is illustrated with engravings and plans.

These scattered Henry family papers, except for a few letters from William Taft and about Dr. Bowditch addressed to John Stewart Henry, 1929-30, reflect Leila Henry's interest in family history. They include genealogical charts, a biographical sketch of Lysbeth Dawson Murdoch, and a copy of a Banffshire newspaper of 1894 reprinting sections of Barbara Mitchell's diary of her return journey from Nova Scotia to Scotland.

Collection contains a manuscript letter from Henry Lyman to his wife, Mary, in Granby; dated July 25, 1849, when the druggist shop Wm. Lyman & Co. was located at 194 and 196 St. Paul St. in Montreal, the letter deals principally with the cholera epidemic in the city.