Carroll, W. D. [Letter from W. D. Carroll to Truett Latimer, August 7, 1961], letter, August 1, 1961; (https://texashistory.unt.edu/ark:/67531/metapth1272769/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .