Courtney, Lawrence E. [Letter from Truett Latimer to Lawrence E. Courtney, February 24, 1961], letter, February 24, 1961; (https://texashistory.unt.edu/ark:/67531/metapth1273068/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .