Twelfth Armored Division Association (U.S.). Hellcat News, (Skokie, Ill.), Vol. 21, No. 11, Ed. 1, July 1967, newspaper, July 1967; (https://texashistory.unt.edu/ark:/67531/metapth410195/m1/1/: accessed June 27, 2019), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .