Typed caption: "THE 'NIGHT TRANSCONTINENTAL' -- The climax for speed in transcontinental communication was achieved May 1 when mail was flown between New York and Atlantic seaboard cities and California in thirty- two hours with the loss of only one business day. Approximately sixty per cent of this 2700-mile airway is flown at night.
"This picture shows a plane of Boeing Air Transport, which flies two-thirds of the transcontinental route, in flight over western mountains. Its powerful Hornet engine drives it at a top [cut off] 142 miles an hour with its load of 60,000 letters [cut off]."
Boeing Air Transport, [Boeing Air Mail aircraft in flight], [1996-11-26_image_045]. Museum of Flight Digital Collections, accessed 12/10/2026, https://digitalcollections.museumofflight.org/nodes/view/29539