[Letter from Gary L. Wood to I. H. Kempner, III, October 12, 1973], letter, October 12, 1973; (https://texashistory.unt.edu/ark:/67531/metapth1211491/m1/7/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .