[Letter to J. J. Barnes from M. W. Stevenson #1], letter, December 1963; (https://texashistory.unt.edu/ark:/67531/metapth340041/m1/1/: accessed July 7, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .
[Letter to J. J. Barnes from M. W. Stevenson #1], letter, December 1963; (https://texashistory.unt.edu/ark:/67531/metapth340041/m1/1/: accessed July 7, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .