[Letter from Harris L. Kempner to Mr. W. J. Bender, January 14, 1957], letter, January 14, 1957; (https://texashistory.unt.edu/ark:/67531/metapth1419286/m1/2/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .