Gatz, William L. [Letter from William L. Gatz to D. W. Kempner, July 3, 1954], letter, July 3, 1954; (https://texashistory.unt.edu/ark:/67531/metapth1344370/m1/1/: accessed July 13, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .