[Letter from L. E. Scherck to D. W. Kempner, April 9, 1954], letter, April 9, 1954; (https://texashistory.unt.edu/ark:/67531/metapth1384179/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .