Medina Valley and County News Bulletin (Castroville, Tex.), Vol. 9, No. 9, Ed. 1 Wednesday, June 19, 1968, newspaper, June 19, 1968; (https://texashistory.unt.edu/ark:/67531/metapth1599129/m1/1/: accessed June 3, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .