The Optimist (Abilene, Tex.), Vol. 57, No. 19, Ed. 1, Friday, February 27, 1970, newspaper, February 27, 1970; (https://texashistory.unt.edu/ark:/67531/metapth99512/m1/7/: accessed August 25, 2019), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .