The fonds consists of concert and theatre programs from Millbrook, Ontario; World War I materials including prisoner-of-war post cards, and photographs; and theatre programs, menus and other material relating to entertainments which allied prisoners in German war camps devised for their own amusement and which were collected by Lieutenant W.E. Massey-Cooke.

This fonds consists of a dedication program for the cenotaph honouring the heroes of the Great War (World War I) in Millbrook on June 23, 1921. There is also a photograph of the Millbrook Lacrosse Team of 1881 who were the Champions of Central Ontario. The photograph has a list of names affixed to the back of it.