Roberson, James A. [Letter from James A. Roberson to Truett Latimer, February 20, 1957], letter, February 20, 1957; (https://texashistory.unt.edu/ark:/67531/metapth1263301/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .