Slogan Postal Markings of Canada 1931-40
Slogan Postal Markings of Canada in the 1931-40 Period, 1991 by Rosenblat, Daniel G.. Prepared by the Slogan Study group of BNAPS. Single- and multi-office listings of slogan postal markings in use from 1931-40. Includes earliest and latest recorded use. Cerlox bound, 54 pp.