Silva, Marcelo. Rio Grande Herald (Rio Grande City, Tex.), Vol. 35, No. 31, Ed. 1 Thursday, May 18, 1978, newspaper, May 18, 1978; (https://texashistory.unt.edu/ark:/67531/metapth194663/m1/1/: accessed June 18, 2019), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .