Rio Grande Herald (Rio Grande City, Tex.), Vol. 32, No. 30, Ed. 1 Thursday, May 16, 1974, newspaper, May 16, 1974; (https://texashistory.unt.edu/ark:/67531/metapth194459/m1/10/: accessed May 7, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .