[Letter from Norman R. Galloway to Harris L. Kempner, September 9, 1964], letter, September 9, 1964; (https://texashistory.unt.edu/ark:/67531/metapth1421502/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .