Mt. Vernon Optic-Herald (Mount Vernon, Tex.), Vol. 91, No. 42, Ed. 1 Thursday, July 14, 1966, newspaper, July 14, 1966; (https://texashistory.unt.edu/ark:/67531/metapth1277768/m1/1/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .