Cachet art sketch for Flying Mail Car Route AM #1
This is a sketch for a cachet used on mail carried October 1, 1946, on United Airlines’ Flying Mail Car airmail service flight. The art includes the artist's initials and the notation "9/23" and is mounted on a piece of backing paper. The backing paper includes markings 668 over 3, “Del Wid, 9 am” and the number 16 in a circle.
The Post Office Department worked with United Air Lines and American Airlines to test the feasibility of using clerks to process mail in airplanes while in flight. The route, designated AM 1, was for flights between San Francisco, California, and Seattle, Washington. Mail on the flight was marked with green cachets in New York and Eugene, Oregon; purple cachets denoted New York’s airmail field, Chicago, Omaha, Salt Lake City, San Francisco, Sacramento, Portland, and Seattle. Blue cachets were applied in Denver and Medford, Oregon; red cachets were applied in Chicago and San Francisco.
American Air Mail Society, A Priced Catalogue and Reference Listing of the Airposts of the World, American Airmail Catalog, 6th edition. Mineola, New York, Volume 3, 2004.