Scudder, N. F. A Flight Investigation of the Effect of Mass Distribution and Control Setting on the Spinning of the XN2Y-1 Airplane, report, January 1, 1935; (https://digital.library.unt.edu/ark:/67531/metadc66141/m1/1/: accessed October 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .