![Magazine ad for Pratt & Whitney found in the December 1937 issue of Aero Digest](https://i0.wp.com/www.adtothebone.com/wp-content/uploads/2023/04/prattwhitneyaerodigest121937800.jpg?resize=625%2C847)
Magazine ad for Pratt & Whitney found in the December 1937 issue of Aero Digest.
Pratt & Whitney, the early years.
Da plane! Da plane!
Da Lockheed Super Electra 14H2
A bit about Trans-Canada Airlines, a subsidiary of the Canadian National Railway Company.
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