Hill, Kenneth N. [Letter from Kenneth N. Hill to Harris L. Kempner, October 23, 1963], letter, October 23, 1963; (https://texashistory.unt.edu/ark:/67531/metapth1420799/m1/1/: accessed July 10, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .