Perry, J. D., Jr. [Letter from J. D. Perry, Jr. to Truett Latimer, February 18, 1957], letter, February 18, 1957; (https://texashistory.unt.edu/ark:/67531/metapth1263400/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .