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 ephemera, artifacts, and publications related chiefly to the Expo 67 World Fair in Montreal and some documents relating to its continuation, Man and His World (Terre des Hommes), an exhibition that was the successor to Expo 67. Many of the records and artifacts were produced by participant countries and sponsors or by the Canadian Corporation for the 1967 World Exhibition. Ephemera includes postcards, visitor passports, and ticket stubs, while other textual documents include guidebooks, magazines, catalogues, books, clippings, information manuals, and some unpublished planning documents. Artifacts include license plates, vinyl records, letter opener, bottle caps, shopping bags, and pins. The collection features pamphlets and brochures for numerous pavilions, events, services, and countries featured, as well as many maps for the Expo 67 grounds and documents related to subsequent seasons of Man and His World.