The Rattler (San Antonio, Tex.), Vol. 51, No. 6, Ed. 1 Friday, January 20, 1967, newspaper, January 20, 1967; (https://texashistory.unt.edu/ark:/67531/metapth1137358/m1/6/: accessed June 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .