The microfilms are copies of the 1851 and 1861 decennial nominal census for Peterborough County and parts of Prescott and Prince Edward Counties. Also included (reel 4) is the 1851 census for the Townships of Minden, Stanhope, and Dysart.

The microfilms are copies of the decennial nominal census for Peterborough County from 1871. The microfilm also includes census records for parts of Northumberland East, Prince Edward and Hastings Counties.