[Letter from D. W. Kempner to Geo. J. Ball, Inc., February 4, 1954], letter, February 4, 1954; (https://texashistory.unt.edu/ark:/67531/metapth1344317/m1/2/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .