Mt. Vernon Optic-Herald (Mount Vernon, Tex.), Vol. 104, No. 38, Ed. 1 Thursday, May 31, 1979, newspaper, May 31, 1979; (https://texashistory.unt.edu/ark:/67531/metapth1330336/m1/3/: accessed June 26, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .