Armored Sentinel (Temple, Tex.), Vol. 11, No. 17, Ed. 1 Thursday, April 25, 1957, newspaper, April 25, 1957; (https://texashistory.unt.edu/ark:/67531/metapth254479/m1/1/: accessed June 28, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .