The Optimist (Abilene, Tex.), Vol. 59, No. 1, Ed. 1, Friday, September 10, 1971, newspaper, September 10, 1971; (https://texashistory.unt.edu/ark:/67531/metapth99545/m1/2/: accessed March 5, 2021), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .