Mt. Vernon Optic-Herald (Mount Vernon, Tex.), Vol. 98, No. 1, Ed. 1 Thursday, September 21, 1972, newspaper, September 21, 1972; (https://texashistory.unt.edu/ark:/67531/metapth1281406/m1/1/: accessed June 26, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .