Stability and Control Measurements Obtained during USAF-NACA Cooperative Flight-Test Program on the X-4 Airplane (USAF No. 46-677), report, October 26, 1951; (https://digital.library.unt.edu/ark:/67531/metadc58987/m1/1/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .