Source consulted: Bowers, P. M. "Yesterday's Wings: The Monocoupe 218." The AOPA Pilot, March 1979.
Source consulted: Cearley, George Walker. Western Air Lines: America's Oldest Airline. G. W. Cearley, 1987.
Source consulted: Mulder, Rob. J. M. The Fokker Fours. European Airliners, 2019.
Source consulted: Scheppler, R. H. "Fokker's Flying Giants." From TMOF Tech Files.
Source consulted: Underwood, John W. Of Monocoupes and Men: The Don Luscombe, Clayton Folkerts Story. Heritage Press, 1973.
Source consulted: Zazas, James B. Visions of Luscombe: The Early Years. SunShine House, 1993.