Cape, James F., Jr. [Letter from James F. Cape, Jr. to T. N. Carswell - December 20, 1966], letter, December 20, 1966; (https://texashistory.unt.edu/ark:/67531/metapth1398689/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .