"Pan-Pacific First Flight" First Day Cover, 1940 (envelope with stamp & postmark)

Louis Gilman mailed this envelope to himself, using a six-cent Air Mail stamp, postmarked June 20, 1940. It is a first day cover (sealed empty air mail envelope) issued to celebrate "Pan-Pacific First Flight" from Alaska to the continental United States, starting at Nome, Alaska, via Fairbanks, Juneau, and Ketchikan, and ending at Seattle, Washington. The cover includes a tiny photograph of Pan American Airways Boeing 314 "American Clipper" at anchor, surrounded by an elaborate illustration including a map, the Seal of the Territory of Alaska, and a Sikorsky S-42 in flight over a scene with bear and whale in landscape.