Mt. Vernon Optic-Herald (Mount Vernon, Tex.), Vol. 100, No. 32, Ed. 1 Thursday, April 24, 1975, newspaper, April 24, 1975; (https://texashistory.unt.edu/ark:/67531/metapth1267683/m1/1/: accessed June 26, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .