[Letter from the Law offices of Wigley, McLeon, Mills & Shirley to R. L. Kempner, December 16, 1953], letter, December 16, 1953; (https://texashistory.unt.edu/ark:/67531/metapth1058394/m1/1/: accessed June 9, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .