Rio Grande Herald (Rio Grande City, Tex.), Vol. 31, No. 24, Ed. 1 Thursday, July 12, 1973, newspaper, July 12, 1973; (https://texashistory.unt.edu/ark:/67531/metapth194417/m1/2/: accessed June 10, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .