Airline Expansion and Innovation (1927 - 1941)

Boeing 40B

The Boeing 40B could carry 4,400 kilograms (2,000 pounds) of mail and four passengers. The pilot flew the airplane from an open cockpit behind the passenger compartment.
Gift of David M. Shipton

Image number 2007-15196
Credit: Smithsonian Institution, National Air and Space Museum

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