Kempner, Isaac H. (Isaac Herbert), 1873-1967. [Letter from I. H. Kempner to W. L. Gatz, June 15, 1948], letter, June 15, 1948; (https://texashistory.unt.edu/ark:/67531/metapth1449624/m1/1/: accessed July 11, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .