Kempner, Isaac H. (Isaac Herbert), 1873-1967. [Letter from I. H. Kempner to Herman Cohen, March 1, 1954], letter, March 1, 1954; (https://texashistory.unt.edu/ark:/67531/metapth1502210/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .