[Letter from W. L. Gatz to Daniel W. Kempner, August 21, 1954], letter, August 21, 1954; (https://texashistory.unt.edu/ark:/67531/metapth1344093/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .