Rio Grande Herald (Rio Grande City, Tex.), Vol. 35, No. 85, Ed. 1 Thursday, May 31, 1979, newspaper, May 31, 1979; (https://texashistory.unt.edu/ark:/67531/metapth194717/m1/1/: accessed May 9, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .