The Optimist (Abilene, Tex.), Vol. 67, No. 27, Ed. 1, Friday, April 18, 1980, newspaper, April 18, 1980; (https://texashistory.unt.edu/ark:/67531/metapth91996/m1/1/: accessed April 24, 2019), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .