Carswell, T. N. (Thomas Norwood). [Letter from T. N. Carswell to Walter D. Townley - April 23, 1938], letter, April 23, 1938; (https://texashistory.unt.edu/ark:/67531/metapth1398785/m1/1/: accessed May 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .