1924/33, semi-official airmail postal history collection, with over fifty covers, beginning with two Estevan-Winnipeg Promotional issue illustrated covers, 1925 (25c) red Laurentide Air Service on Roessler cover, several Northern Air Service, 1926 Jack V. Elliot Air Service examples showing both background types, Elliot-Fairchilds Air Service, several 1926 Patricia Airways & Exploration & Patricia Airways Limited (8), including “Special Air Service” overprint types, with the difficult 10c overprint Type A in red with 5c overprint Type B in black (Unitrade CL27), ten Western Canada Airways, six (25c) blue Yukon Airways, three scarce Klondike Airways, one on Roessler cover with McGreely’s Express label, Commercial Airways “Air Fee” in black and orange, etc, some with small faults, but a chiefly fine group, with many desirable covers.
