[Letter from I. H. Kempner to Robert M. Harriss, December 17, 1955], letter, December 17, 1955; (https://texashistory.unt.edu/ark:/67531/metapth1506095/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .