Willson, J. M. [Letter from J. M. Willson to T. N. Carswell - September 3, 1942], letter, September 3, 1942; (https://texashistory.unt.edu/ark:/67531/metapth1397818/m1/1/: accessed July 11, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .