Canada: Canadian Pacific Airlines

Here are airline issue labels from Canadian Pacific Airlines.

Year: 1946, Gummed. Günter Mair's catalogue no: - CAN-B-7, imperforated, arrow shape, 
Blue/red/white, 3***

Year: 1951, Gummed. Günter Mair's catalogue no: - CAN-B-9a, imperforated, parallelogram shape,
Black-blue/red/light greenish blue/white, 3***

Year: approx.1955, Gummed. Günter Mair's catalogue no: - CAN-B-9c, perforated H 12, vertical strips, parallelogram shape, violet-blue/red/light greenish blue/white, 3***