The Optimist (Abilene, Tex.), Vol. 57, No. 22, Ed. 1, Friday, March 20, 1970, newspaper, March 20, 1970; (https://texashistory.unt.edu/ark:/67531/metapth99515/m1/2/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .