Rio Grande Herald (Rio Grande City, Tex.), Vol. 32, No. 28, Ed. 1 Thursday, May 2, 1974, newspaper, May 2, 1974; (https://texashistory.unt.edu/ark:/67531/metapth194457/m1/4/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .