This collection consists of two series. The first consists of 1565 photographs and their negatives which constituted Charlottetown's Centennial project entitled "The Island from Cartier to Centennial". The second series contains 91 photographs and their negatives of different public and private buildings throughout Prince Edward Island.

The fonds contains legal papers and family correspondence of both families, as well as political speeches and essays by A. B. Warburton. It also contains biographical information, loose photographs, one photograph album, and over 440 digital images relating to the Warburton and Longworth families. Some of the photographs include social and sporting events in which the families participated. The fonds has been divided into the following series:

Series 1: Warburton family
Series 2: Longworth family
Series 3: Photographs