The War Whoop (Abilene, Tex.), Vol. 48, No. 25, Ed. 1, Wednesday, April 21, 1971, newspaper, April 21, 1971; (https://texashistory.unt.edu/ark:/67531/metapth104145/m1/1/: accessed April 27, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .