The Rio Grande Herald (Rio Grande City, Tex.), Vol. 80, No. 28, Ed. 1 Thursday, June 7, 1990, newspaper, June 7, 1990; (https://texashistory.unt.edu/ark:/67531/metapth195240/m1/1/: accessed April 26, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .