Rio Grande Herald (Rio Grande City, Tex.), Vol. 31, No. 27, Ed. 1 Thursday, August 2, 1973, newspaper, August 2, 1973; (https://texashistory.unt.edu/ark:/67531/metapth194418/m1/1/: accessed May 13, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .