Trejo, Raul. Rio Grande Herald (Rio Grande City, Tex.), Vol. 31, Ed. 1 Thursday, June 14, 1973, newspaper, June 14, 1973; (https://texashistory.unt.edu/ark:/67531/metapth194411/m1/1/: accessed September 26, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .