[Letter from Harris L. Kempner to Jimmie Cochran - March 2, 1963], letter, March 2, 1963; (https://texashistory.unt.edu/ark:/67531/metapth1446848/m1/1/: accessed July 4, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .