The file contains information the 6th Duke of Connaught Royal Canadian Hussars of Montreal from 1872 to 1987. It consists of (largely reproductions) a history, militia lists, acquittance rolls for militia camps, and service rolls, in particular for the Missisquoi Troop of Calvary, as well as notes and correspondence by Herbert Derick. Among the photographs is an image of the 6th Duke of Connaught Hussars at camp house in 1899; the officers at brush up course, Royal School of Calvary at Stanley Barracks in 1910; and members of Squadron A, 6th Duke of Connaught at the Farnham Camp in 1912.