Armored Sentinel (Temple, Tex.), Vol. 30, No. 20, Ed. 1 Friday, June 4, 1971, newspaper, June 4, 1971; (https://texashistory.unt.edu/ark:/67531/metapth255115/m1/1/: accessed August 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .