The fonds consists of records related to the history and activities of the Brownsville Optimist Club formerly located in Brownsville, Ontario. They are arranged into the following series and subseries:
Series 1: Charter Banquet, 1 June 1974
Series 2: Executive Officers’ Photographs
File 1: 1974 - 1980
File 2: 1980 - 1990
File 3: 1990 - 1995