Air Mail cover 1924-31, the collection of airmail covers, comprising Semi-Official flights (7 with 1924 Estevan-Winnipeg) and Official flights (145 carried on a wide range of flights, mostly with special illustrated cachets and including 1925 by Sea Plane from Victoria, 1927 from Montreal with Flight Abandoned h.s. and many from Alberta, British Columbia and Saskatchewan); also four incoming flights from U.S.A.. Some affected by areas of toning though an interesting lot. (156 items)