The Martin GMB used on Round The Rim Flight, 1919.  The total distance of approximately 10,000 miles was flown in 114 hours, 45 minutes. This was a tremendous achievement for such an early period in the development of the multi-engine bomber.
United States Air Force
Maurer Maurer, 1987, Aviation in the US. Army, 1919-1938, United States Air Force Historical Research Center, Office of Air Force History,  United States Air Force, Washington, D.C.