Tri-County Sun Progress (Pearland, Tex.), Vol. 6, No. 38, Ed. 1 Thursday, April 2, 1970, newspaper, April 2, 1970; (https://texashistory.unt.edu/ark:/67531/metapth1215092/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .