Operated by Boeing Air Transport a Boeing 40A carries the mail between Chicago and San Francisco in 1927.

Operated by Boeing Air Transport a Boeing 40A carries the mail between Chicago and San Francisco in 1927.

Images from The History of Air Cargo and Airmail book

View all 300 images, photos and maps from the history of air cargo and the history of air mail

The History of Air Cargo and Airmail book
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