Dobbyn, Harry W. [Letter from Harry W. Dobbyn to Truett Latimer, July 28, 1961], letter, July 28, 1961; (https://texashistory.unt.edu/ark:/67531/metapth1272390/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .