The Optimist (Abilene, Tex.), Vol. 67, No. 29, Ed. 1, Friday, May 2, 1980, newspaper, May 2, 1980; (https://texashistory.unt.edu/ark:/67531/metapth91998/m1/1/: accessed April 18, 2019), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .