Barnes, Charles B., Jr. [Letter from Charles B. Barnes, Jr. to Harris L. Kempner, May 4, 1956], letter, May 4, 1956; (https://texashistory.unt.edu/ark:/67531/metapth1419072/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .