- CollectionP058 - Herbert Derick collection
- Series004 - Research
- Sub-series65 - Military
- File023 - Military postcards
- Part001 - Watering horses in the St. Francis River at military camp near Sherbrooke, Que.
- Part002 - 5th Canadian Mounted Rifles in France
- Part003 - Officers of the Main Guard
- Part004 - Military Camp Sherbrooke P.Q.
- Part005 - Colonel Farnsworth with other military officers
- Part006 - 11th Hussars in camp at Farnham