Tri-County Sun Progress (Pearland, Tex.), Vol. 4, No. 38, Ed. 1 Thursday, March 28, 1968, newspaper, March 28, 1968; (https://texashistory.unt.edu/ark:/67531/metapth1243063/m1/1/: accessed June 8, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .