[Letter from Daniel W. Kempner to L. A. L. Herbert, August 11, 1949], letter, August 11, 1949; (https://texashistory.unt.edu/ark:/67531/metapth1341581/m1/1/: accessed August 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .