Arentz, Edward S. [Letter from Edward S. Arentz to Mr. Sayles, November 24, 1939, letter, November 24, 1939; (https://texashistory.unt.edu/ark:/67531/metapth1155023/m1/1/: accessed July 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .