The Rio Grande Herald (Rio Grande City, Tex.), Vol. 80, No. 73, Ed. 1 Thursday, May 2, 1991, newspaper, May 2, 1991; (https://texashistory.unt.edu/ark:/67531/metapth195287/m1/2/: accessed May 22, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .