Kempner, Harris Leon, Jr. [Telegram from Harris L. Kempner Jr. to Harris L. Kempner, March 11, 1965], letter, March 11, 1965; (https://texashistory.unt.edu/ark:/67531/metapth1436639/m1/1/: accessed July 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .