U.S. Postage Stamp issued in 1976 honoring the 50th Anniversary of U.S. Commercial Aviation (1926-1976) Scott #1684.
Illustrated on the stamp are the first two airplanes used to carry U.S. Air Mail under contract: Ford-Stout AT-2 (upper) and Laird Swallow (lower). CAM-6 (Detroit-Cleveland) and CAM-7 (Detroit-Chicago) were inaugurated using the AT-2 on February 15, 1926, and CAM-5 (Pasco, WA to Elko, NV) using the Swallow on April 6, 1926.