Collection consists of an inventory of land locations for early settlers and inhabitants of Ops Township from the initial survey of the township in 1825 to 1872. It includes census information and assessments of households, various voter's lists, many Ops Township documents and one map for the 1839 Assessment Roll. The collection also includes a variety of cookbooks, recipes, food preparation manuals for specific cooking devices, and research notes.

This fonds consists of research papers and notes pertaining to the publication of the Peterborough Historical Atlas in 1975 and the subsequent activities of the Peterborough Atlas Foundation.