Mt. Vernon Optic-Herald (Mount Vernon, Tex.), Vol. 106, No. 15, Ed. 1 Thursday, December 11, 1980, newspaper, December 11, 1980; (https://texashistory.unt.edu/ark:/67531/metapth1336110/m1/2/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .