The H-SU Brand (Abilene, Tex.), Vol. 57, No. 48, Ed. 1, Tuesday, April 18, 1972, newspaper, April 18, 1972; (https://texashistory.unt.edu/ark:/67531/metapth98844/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .