Kraft, Christopher C., Jr.; Goranson, R. Fabien & Reeder, John P. Flight Measurements of Flying Qualities of a P-47D-30 Airplane (AAF No. 43-3441) to Determine Longitudinal Stability and Control and Stalling Characteristics, report, February 18, 1948; (https://digital.library.unt.edu/ark:/67531/metadc65259/m1/1/: accessed November 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .