Twelfth Armored Division Association (U.S.). Hellcat News, (Springfield, Ill.), Vol. 32, No. 9, Ed. 1, May 1978, newspaper, May 1978; (https://texashistory.unt.edu/ark:/67531/metapth410680/m1/1/: accessed April 25, 2019), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .