Mount Vernon Optic-Herald (Mount Vernon, Tex.), Vol. 112, No. 29, Ed. 1 Thursday, March 12, 1987, newspaper, March 12, 1987; (https://texashistory.unt.edu/ark:/67531/metapth1330386/m1/1/: accessed July 13, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .