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.

The collection contains three volumes of manuscripts from an anonymous student of the course of lectures on midwifery by Dr. Thomas Young, dating from 1783. The first volume has three inserts: two pencil portraits of unidentified men and an envelope on which is written a note to Dr. J.A.S. Brunelle. The collection is divided in three file folders.

There is business correspondence, 1792-1800, with letters from among others Alexander Mackenzie, Joseph Frobisher, Alexander Henry, Simon Fraser and Roderick Mackenzie. There are also minutes and resolutions of the Executors of McTavish in a bound volume; and a contemporary copy of the minutes of the executors of his will, 1805.

The typescripts are arranged into four series. A: manuscripts related to Oregon; B: manuscripts related to Washington; C: manuscripts related to Canada and particularly British Columbia; C: manuscript related to the history of Oregon and the fur trade.

In series C, of particular interest are the first and second journal of Simon Fraser, 1806, 1808; the voyages of the ship Columbia, 1787-1789; and the journal of John Work, Chief Factor, Hudson’s Bay Company, Astoria, 1824-1834.

The collection contains business and family correspondence, land grants, financial and judicial records, etc. of the seigneurial families Chartier de Lotbinière, Rigaud de Vaudreuil, Lefebvre de Bellefeuille, Lemoyne de Longueuil, Lambert Dumont, Chaussegros de Léry, Hertel, Harwood, and of allied families. Much of the material concerns the Seigneurie de Vaudreuil. Other material include correspondence (1809-1821) with Joseph Bouchette; extracts from the registers (1667, 1732) of the Conseil Souverain and the Conseil Superieur; and documents concerning Newton Township, the Seigneurie des Mille-Iles.

This collection of original documents concerning Protestant education in Quebec was assembled by E.I. Rexford for his history of the High School of Montreal. The bulk of this material dates from the 1830s and 1840s, and includes a 300 page report on the Jesuit Estates, 1839, a summary of educational legislation, 1838, grammar school returns from Canada West, 1842, and a number of surveys and accounts.

Affidavit concerning Bown’s controversy with the Hudson’s Bay Company over the printing by the Nor’-Wester of a petition on memorial dealing with imprisonment of Dr. John Schultz. It is dated 10 July 1868 at St. Cloud Minn. Note: Part of Exhibit A, and all of Exhibits B, C, & D are missing.

This material comprises a group of official documents, and correspondence among various partners. The official documents include four articles of agreement for partnership between various Montréal companies, largely with McTavish, Frobisher and Co., 1790-1802, and a memorandum on the effect of exchange differences on the partners' shares (approximately 1826). The partners' correspondence, approximately 1792-1808, contains letters from Simon McTavish, Isaac Todd, and Alexander Mackenzie concerning provisions, business agreements and loans. A letter from William McGillivray to Mr Justice Reid discusses family matters. One financial ledger for the North West Company contains business accounts and records transactions. The bulk of entries are dated from January 1810 to November 1825, with some entries dated 1861.

The collection consists of fifteen volumes, primarily manuscript with some printed, containing over 1,300 culinary and medical handwritten recipes, plus numerous loose recipes also mainly manuscript. The documents in the collection originated chiefly from the Doncaster area of South Yorkshire, centred on Hooten Pagnell Hall. Many of the manuscripts and notes are signed by or addressed to Sarah Anne Warde. Series 1 comprises the fifteen bound volumes, two of which are printed works by female authors, while the remaining thirteen are manuscript notebooks. Two of these manuscript notebooks are attributed to Sarah Anne Warde, while one is attributed to Eliza Smithson. The manuscript attributed to Eliza Smithson contains table setting riddles (also known as an enigmatical bill of fare). Loose recipes are found in Series 2. This series consists of approximately 300 culinary, medical, and household recipes dating from roughly the 1780s through the 1850s.