[Letter from Isaac H. Kempner to the Galveston Chamber of Commerce, November 12, 1958], letter, November 12, 1958; (https://texashistory.unt.edu/ark:/67531/metapth1504282/m1/2/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .