Lyons, Maxwell. [Letter from Maxwell Lyons to Mr. I. H. Kempner, January 11, 1957], letter, January 11, 1957; (https://texashistory.unt.edu/ark:/67531/metapth1491053/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .