Slaughter, Carlos A. [Letter from Carlos A. Slaughter to Mr. I. H. Kempner, October 15, 1949], letter, October 15, 1949; (https://texashistory.unt.edu/ark:/67531/metapth1479944/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .