Cornelisse, Diana G. Home Field Advantage. Wright-Patterson Air Force Base, Ohio: U.S. Air Force Publications, 2004. ISBN 0-16-068065-4.
Cornelisse, Diana G. Splendid Vision, Unswerving Purpose: Developing Air Power for the United States Air Force During the First Century of Powered Flight. Wright-Patterson Air Force Base, Ohio: U.S. Air Force Publications, 2002. ISBN 0-16-067599-5.
Report on Official Performance Test of Barling Bomber, NLB-1, P-303, Light Load Configuration. McCook Field, Dayton, Ohio: Air Service Engineering Division, War Department, Flight Test Unit, Flight Research Branch, 14 April, 1926.
Swanborough, Gordon and Peter M. Bowers. United States Military Aircraft since 1909. London: Putnam, 1963.
Tilford, Earl H., Jr. "The Barling Bomber." Aerospace Historian, June 1979, pp. 91–97.
Winchester, Jim. The World's Worst Aircraft: From Pioneering Failures to Multimillion Dollar Disasters. London: Amber Books Ltd., 2005. ISBN 1-904687-34-2.