Trejo, Raul, editor. Rio Grande Herald (Rio Grande City, Tex.), Vol. 32, No. 30, Ed. 1 Thursday, May 16, 1974, Newspaper, May 16, 1974; digital images, (http://texashistory.unt.edu/ark:/67531/metapth194459/ : accessed December 19, 2013), University of North Texas Libraries, The Portal to Texas History, http://texashistory.unt.edu; crediting Rio Grande City Public Library, Rio Grande City, Texas.