Stanford, John W., Jr. [Letter from John W. Stanford to Melvin L. Wulf, October 19, 1964], letter, October 19, 1964; (https://texashistory.unt.edu/ark:/67531/metapth1261412/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .