The Optimist (Abilene, Tex.), Vol. 67, No. 21, Ed. 1, Friday, February 29, 1980, newspaper, February 29, 1980; (https://texashistory.unt.edu/ark:/67531/metapth91990/m1/1/: accessed April 30, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .