Kempner, Isaac H. (Isaac Herbert), 1873-1967. [Letter from I. H. Kempner to the American Consul General, May 23, 1941], letter, May 23, 1941; (https://texashistory.unt.edu/ark:/67531/metapth1452257/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .