The collection consists of falls into two series: Papers and Diaries. The Papers primarily reflect Brown's political concerns and activities in Montreal between 1832 and 1838. They include excerpts from the Vindicator newspaper, notes, resolutions, memoranda and speeches, as well as letters to Brown concerning Florida politics and the United States' negotiations with Native peoples, 1841-1843. There are also business documents and letters; essays by Brown on the 1837-1838 Lower Canada Rebellion and the annexation of Canada; and a journal kept during an ocean voyage in 1838.

The Diaries consist of seven notebooks written in pencil, or perhaps more properly dictated, by Brown in 1887-1888. They were transcribed by F. J. Nobbs in 1987.

Collection consists of Joseph Crawhall's correspondence, notes, memoranda, and manuscripts related to his research on engraver Thomas Bewick (1753-1828).

The collection consists of architectural drawings from 1888-1897 documenting three projects by Price: Windsor Station (1888-1889), James Ross House (extension, 1897), and an office building for William C. Van Horne in Vancouver, BC. These were some of Price's important commissions in Canada where he produced his most memorable work in a Romanesque Revival style, including the original wing of Chàteau Frontenac Hotel in Quebec City, QC (1882-1893), and Windsor Station for the Canadian Pacific Railway Company in Montreal, QC (1888-1889).

La collection inclut 35 dessins architecturaux créés entre 1888 et 1897. Il réunit trois projets de Price : la gare Windsor (1888-1889), la maison James Ross (rallonge, 1897) et un édifice à bureaux pour William C. Van Horne à Vancouver, Colombie britannique. Ceux sont parmi des plus importantes réalisations de Price au Canada où il a produit ses oeuvres de style néo-romanesque les plus mémorables : le bâtiment principal de l'hôtel Château Frontenac à Québec (1882-1893) et la gare Windsor pour la société Canadien Pacifique (1888-1889).

Collection consists of six account books dating from the 1830s to the 1860s, including ledgers and daybooks, used and kept primarily by Enoch Curtis for his leather tanning business. There are also some loose accounts and notes on small sheets of paper. The ledgers use a single-entry bookkeeping method in £sd. They are organized by individual merchant account, with records of debits (purchases or expenditures made) and credits (payments or goods received). Parallel underlining and Xs indicate when an account has balanced. The collection also includes some records related to Stella Curtis from the 1890s, including one letter and two sheets of math problems marked Clarenceville Model School.

The Montreal Mendelssohn Choir Collection comprises several volumes of sheet music from the Choir’s library. The choral folios were compiled and bound into eight volumes at the time of their donation to McGill University in 1895. The estate of D. Torrance Fraser, a former Choir member, donated another four volumes of choral music in 1926 and 1927. Three volumes contain second copies of the pieces from the Choir’s library donated thirty years prior; the fourth volume donated in 1927 contains a number of pieces performed by the Choir but not found in the seven extant volumes from the Choir’s library.

Collection consists of 36 autograph letters written to James Cameron and his son Archie. The correspondence includes letters by friends, associates, and members of the Cameron family in Toronto, Lake Beauport, Scotland, England, Hull, and Montreal. Subjects include family news, freemasonry, business (regarding deed of sales), factory work in Toronto, curling, and an April Fools' Day letter. With three extant envelopes.

The collection consists of six of Walter Crane’s sketchbooks. Two of the sketchbooks date to the summer of 1864, and the remaining four date to the summers of 1897, 1901, 1903, and 1905. The collection’s dates offer a contrast between Crane’s early and later career as an artist. The contents feature his preliminary designs, pictorial observations of the world, and textual notes.

Crane’s sketchbooks are filled with landscapes and towns and building interiors and exteriors from Crane’s life in England and travels to Ireland. Aligned with Crane’s commissioned and published works, the sketchbooks include sketches for his book designs, a heraldic eagle, and plans for a panel painting or frieze. Flora, fauna, men, women, children, Greco-Roman figures and architectural details make up the wide range of subjects covered in the sketchbooks.

The drawings range from Crane’s rough ideas expressed in his preliminary sketches and line drawings to tonal drawings and studies of individuals, landscapes, and flowers. The drawing techniques play with perspective, topography, bodily gesture, facial expression, tone, line, outline, form, and colour.

Crane’s notations appear throughout the sketchbooks, including on the sketches themselves and on their facing pages. He also hand-wrote inspirational excerpts from poems and essays which includes quotes from Charles Kingsley and John Ruskin works.

Between blank and torn pages, the medium for the textual and visual content shifts between pen and pencil on paper. Several landscapes are full-page watercolours on paper.

The James Morrison papers are a collection of documents chiefly related to James Morrison's activities as a trader and merchant in Montreal. The papers also include some material related to Morrison's family, including legal documents and genealogical research conducted by his descendents. The documents in the James Morrison papers cover a period beginning 18 September 1651 and ending in approximately 1912, but focusing primarily on 1767 through 1800. The fonds represents Morrison's business dealings in Quebec, Ontario, the northern United States, and England, as well as his family life in Montreal and connections with relatives in Baltimore, Ontario, and Jamaica.

The papers are arranged into three series: 1 - Journals, 2 - Correspondence, and 3 - Financial and legal records. Documents in these series include a bound journal, correspondence, contracts, deeds of ownership, power of attorney, birth and marriage certificates, bills of sale, invoices, accounts, descriptions of political and military events, and genealogical notes.

Collection consists of correspondence, mail-order course prospectus entitled, “How to Become a Mechano-Therapist,” and 30 instructional pamphlets comprising the correspondence course. Also includes reprint from the Journal of the American Medical Association debunking the College. Final file contains provenance records and information about the College and its founder compiled by donor. Framed diploma from the College is also included (Osler ART 101).

The World War I Clippings Collection consists of approximately 635 newspaper clippings and articles related to the First World War. Most of the clippings in this collection consist of daily reporting on troop movements and events that occurred during World War I, with some editorial and commentary pieces. Also included are clippings of maps, most from unidentified newspapers, and clipped recruitment ads. Specific topics include the sinking of the Lusitania, McGill participation in the war, the siege of Przemysl, Canadian troop deployments and casualties, and the Pope. The majority of the clippings come from the Montreal Gazette (approximately 140 clippings) and the Philadelphia Public Ledger (approximately 120 clippings). Around 50 clippings are from the The Evening Bulletin (Philadelphia) and a handful are from The Times (London). Also included are some articles from the D. A. W. War Tracts (numbers 5-7), Berlin, and the Journal of Commerce and Commercial Bulletin (New York). The fonds also contains a copy of the War Gazetteer, compiled by Charles McD. Puckette and Carrington Weems, issued by the New York Evening Post in 1914. The earliest article appears to be reporting on England's declaration of war on Germany, dated 5 August 1914.