[Letter from Daniel W. Kempner to D. B. McDaniel Cadillac Company, April 8, 1949], letter, April 8, 1949; (https://texashistory.unt.edu/ark:/67531/metapth1341802/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .