The file contains information on the Clarenceville Rangers from 1838 to 1839. It consists of reproductions of an appointment certificate for A.H. Vaughan to captain of the Rangers and a letter, and a statement of ammunition.

The file contains information on the 21st Richelieu Light Infantry from 1839 to 1992. It consists of reproductions of a pay sheet, an acquittance roll, and the address given by Mrs. Stewart at the presentation of a flag to the battalion and the reply of Capt. Charles S. Rowe. It also includes a paper written by Herbert Derick on the flag of the 21st Battalion and three photos of the flag.

The file contains information on the 60th Battalion Missisquoi from 1866 to 1986. It consists of notes by and correspondence to Herbert Derick, subscription books to honour ("testimonial")Lt- Col. Charles Rowe and Capt. J.H. Hawley, reproductions of service rolls and correspondence, and the appoinment of a band committee. The photographs depict the battalion in camp at Pigeon Hill in 1870.

The file contains information on the 1st Battlalion Militia of the Eastern Townships from 1837 to 1991. It consists of reproductions of militia lists, an appointment certficate, service roll, an article on the Battle of Lacolle Mill by Herbert Derick, and a declartion of loyalty to the Crown in the context of the 1837 Rebellions.

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.