Dominion of Canada, airports, intermediate aerodromes, seaplane ports and anchorages
G.S.G.S. (Canada. Department. of National Defence. Geographical Section) ; no. 422. At head of title: Department of National Defence, Civil Aviation Branch. In lower, right margin: Base map by National Development Bureau, Department of the Interior. Visual scale [47 mm=200 miles]. Red overprint shows public and private airports, intermediate aerodromes, public and private seaplane ports and anchorages, and R.C.A.F. landplane and seaplane stations.