Twelfth Armored Division Association (U.S.). Hellcat News, (Springfield, Ill.), Vol. 32, No. 11, Ed. 1, July 1978, newspaper, July 1978; (https://texashistory.unt.edu/ark:/67531/metapth410026/m1/1/: accessed February 24, 2020), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .