Pressure Distributions and Force Tests of an NACA 65-210 Airfoil Section With a 50-Percent-Chord Flap, report, January 1947; (https://digital.library.unt.edu/ark:/67531/metadc55231/m1/1/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .