This image or file is a work of a
U.S. Air Force Airman or employee, taken or made as part of that person's official duties. As a
work of the
U.S. federal government, the image or file is in the public domain in the United States.
== Summary == {{Information |Description={{en|1=Lockheed C-40 side view (tail code KA 3) taken Jan. 9, 1939. (U.S. Air Force photo)}} |Source=National Museum of the U.S. Air Force, [http://www.nationalmuseum.af.mil/factsheets/factsheet_media.asp?fsID=3309
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