The Royal Canadian Navy Postal History 1939-45, Vol. 3 (Supp. I)
The Royal Canadian Navy Postal History 1939-1945, Vol. 3 (Supp. I), 1993, 1993 by Percy G. Colbeck & Maurice F. Hampson. Additional information and updates on Naval Mail censorship, FMO and Ship censor numbers, cancellations, photos and covers. Cerlox, 66 pp.