Rio Grande Herald (Rio Grande City, Tex.), Vol. 35, No. 89, Ed. 1 Thursday, June 28, 1979, newspaper, June 28, 1979; (https://texashistory.unt.edu/ark:/67531/metapth194720/m1/1/: accessed July 10, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .