[Letter from Isaac H. Kempner to A. E. Hohenberg, June 4, 1949], letter, June 4, 1949; (https://texashistory.unt.edu/ark:/67531/metapth1476472/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .