Armored Sentinel (Temple, Tex.), Vol. 19, No. 5, Ed. 1 Friday, May 12, 1961, newspaper, May 12, 1961; (https://texashistory.unt.edu/ark:/67531/metapth254673/m1/1/: accessed February 24, 2020), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .