US First Flight Cover Pan Am Yellowstone Park Old Faithful Geyser, Wyoming Lodges Corner to Honolulu, Hawaii via San Francisco USA 1935 US Scott c20 FDC.

This US First Flight Cover is a rare piece of postal history from 1935. It features a Pan American Airways air mail stamp (Scott #C20) and was sent from Yellowstone Park to Honolulu. The cover has been cancelled by machine and is uncertified. It is a great addition to any stamp collection and an excellent example of early aviation mail. The cover is used and shows signs of wear, but it is still a unique piece of history.

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