[Letter from Isaac H. Kempner to Galveston Artillery Club, June 9, 1964], letter, June 9, 1964; (https://texashistory.unt.edu/ark:/67531/metapth1514185/m1/1/: accessed July 4, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .