[Memorandum from James Polk Morris to Edith M. Bonnet, May 16, 1975], text, May 16, 1975; (https://texashistory.unt.edu/ark:/67531/metapth841196/m1/4/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .