Vowell, Raymond W. [Letter from Raymond W. Vowell to Truett Latimer, June 23, 1961], letter, 1961-06-23~; (https://texashistory.unt.edu/ark:/67531/metapth1270609/m1/1/: accessed August 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .