[Letter from Daniel W. Kempner to R. F. Pancost, November 9, 1950], letter, November 9, 1950; (https://texashistory.unt.edu/ark:/67531/metapth1360080/m1/1/: accessed July 12, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .