Mt. Vernon Optic-Herald (Mount Vernon, Tex.), Vol. 94, No. 6, Ed. 1 Thursday, October 31, 1968, newspaper, October 31, 1968; (https://texashistory.unt.edu/ark:/67531/metapth1278208/m1/1/: accessed June 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .