This fonds consists of minutes, correspondence, balance sheets, and financial records of the Gordon Mackay Company, its subsidiaries and some of its officers. It includes photographs, maps, plans, annual reports and newsclippings.

This fonds consists of correspondence, research notes and original documents which were collected by Professor David Macmillan during his research. Items such as voters' lists for Victoria County, Ontario and a series of broadsides advertising land in Victoria County; documents from the Hudson's Bay Company, East Indies; minutes from the Barbados Board of Legislative Council, a Sydney Australia Company, and the Sydney Australian Committee of the New Steam Company; and a number of reproduction engravings and prints are included in the fonds. Also included in the fonds is a copy of Macmillan's 1964 Ph.D. thesis: "The Scottish Australian Connection..." and assorted pamphlets relating to New South Wales.

This fonds consists of a blacksmith's account book belonging to John Tinney of Cavan, Ontario and a small pocket diary kept by a soldier, Hector Tinney who served overseas in World War I. Also included in the fonds are a number of post cards of Belleville, Ontario, Trenton in Ontario as well as a photograph of Hector Tinney and the Tinney blacksmith shop.