This collection consists of assorted documents relating to Cobourg and vicinity. It includes marriage certificates, correspondence, indentures, opera house programmes, choral and church programmes, an oil sketch by Alice M. Duncan, and photographs and postcards. It also includes a copy of the "Cobourg World", April 8, 1898 Volume 25, and No. 43.

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.