Post Office Telegram, London (War Office) to Caerphilly, 13 September 1939: ‘Unclass A33 leave extended 48 hrs report 1900 hrs to Liverpool St Station 18 Sept without fail this telegram must be handed to RTO’ Post Office Telegram 1939
Specification, War Office, 20-Ton Wagons of various types, December 1916, 50 pages. War Office Wagon Specifications 1916
War Office booklet "Military Railways Rule Book 1938 incorporating Amendments Nos. 1 (1939) and 2 (1942)." Published by the War Office in August 1943. 108p. Military Railways Rule Book 1943
