Static Thrust Analysis of the Lifting Airscrew, report, December 1937; (https://digital.library.unt.edu/ark:/67531/metadc54408/m1/1/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .
Static Thrust Analysis of the Lifting Airscrew, report, December 1937; (https://digital.library.unt.edu/ark:/67531/metadc54408/m1/1/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .