[Letter from Walter E. Grover to I. H. Kempner, May 17, 1948], letter, May 17, 1948; (https://texashistory.unt.edu/ark:/67531/metapth1449629/m1/2/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .