[Letter from Harris L. Kempner to Cecile B. Kempner, October 27, 1964], letter, October 27, 1964; (https://texashistory.unt.edu/ark:/67531/metapth1325250/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .