National Geographic : 1926 Jan
Photograph by Nat L.Dewell THE OMAHA FLYING FIELD AT NIGHT Pilots and planes are changed six times en route between New York and San Francisco: at Cleveland, Chicago, Omaha, Cheyenne, Salt Lake City, and Reno. The average flight for each pilot is 381 miles. The longest leg is between Omaha and Cheyenne, 476 miles; theshortest isbetween Reno and San Francisco, 184 miles, where the pilots reach an altitude of from 1o,ooo to 15,ooo feet abovesea level while crossing theSierra Nevada (known in Air Mail parlance as "The Hump"). This transcontinental service is daily and, together withthe added New York-Chicago overnight service, the scheduled yearly mileage is 1,945.450 miles.