The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 7, Ed. 1 Monday, May 23, 1977, newspaper, May 23, 1977; (https://texashistory.unt.edu/ark:/67531/metapth1585219/m1/1/: accessed July 11, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .