[Letter from Gulf Coast Royalty Company to I. H. Kempner, November 1, 1952], letter, November 1, 1952; (https://texashistory.unt.edu/ark:/67531/metapth1456754/m1/1/: accessed August 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .