[Letter from William L. Gatz to D. W. Kempner, November 15, 1954], letter, November 15, 1954; (https://texashistory.unt.edu/ark:/67531/metapth1344363/m1/1/: accessed August 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .