SPECIAL CoLtectiong Wrigley, Roy, 1885- “~scG Checklist and catalog; Canadian postage stamps, - P966 perforated, and overprinted OHMS and 'G'; classi- -W93C fying and pricing. West Vancouver,B.C., The author, 1966.
Cahip. illus. 23cm.
1. Postage-stamps--Canada--Catalogs. 2. Per- forations (Philately )--Canada.