Coleman, Clarence L., Jr. [Letter from Clarence L. Coleman Jr., July 31, 1956], letter, July 31, 1956; (https://texashistory.unt.edu/ark:/67531/metapth1490931/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .