[Letter from Daniel W. Kempner to Roman J. Irwin, August 18, 1944], letter, August 18, 1944; (https://texashistory.unt.edu/ark:/67531/metapth1329026/m1/2/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .