Description of five major air-transportation systems is given, including Aviation Corporation of Delaware, Curtiss-Keys Group, United Aircraft and Transport Corp., Talbot-Hanshue-Western Air Express and Aviation Corporation of the Americas, holding company for Pan American Airways.
The big four of the air lines
West. Flying
Western Flying ; 6 , n 3 ; p 68-71 + 81
1929
1 Fig.
Article (Journal)
English
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