 On March 19, 1976, the USPS issued a 13-cent First Class commemorative Postage Stamp (Scott #1684) honoring the 50th anniversary of U.S. commercial aviation launched with Contract Air Mail service over these two routes as well as on CAM-5 which was inaugurated next on April 6, 1926, over the 487-mile route between Pasco, Washington, and Elko, Nevada, with an intermediate stop in Boise, Idaho.Operated by Varney Air Lines (which later became part of United Airlines), the first Eastbound flight over CAM-5 was made successfully using a "Laird Swallow" biplane piloted by Leon D. Cuddeback.The first Westbound flight that afternoon was much less successful, however, as it was forced 75-miles off course by a storm en route from Elko to Boise before making a forced landing near Jordan Valley, Oregon.