[Letter from Truett Latimer to V. C. Perini, Jr., February 26, 1957], letter, February 26, 1957; (https://texashistory.unt.edu/ark:/67531/metapth1264231/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .