Kempner, Isaac H. (Isaac Herbert), 1873-1967. [Letter from I. H. to Cecile Kempner, May 31, 1952], letter, May 31, 1952; (https://texashistory.unt.edu/ark:/67531/metapth978038/m1/1/: accessed June 25, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .