[Letter from Harris L. Kempner to James T. Baird, February 21, 1966], letter, February 21, 1966; (https://texashistory.unt.edu/ark:/67531/metapth1427643/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .