The Rio Grande Herald (Rio Grande City, Tex.), No. 34, Ed. 1 Thursday, June 18, 1987, newspaper, June 18, 1987; (https://texashistory.unt.edu/ark:/67531/metapth195085/m1/1/: accessed April 27, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .