The Mathis News (Mathis, Tex.), Vol. 54, No. 15, Ed. 1 Thursday, April 14, 1977, newspaper, April 14, 1977; (https://texashistory.unt.edu/ark:/67531/metapth1059793/m1/1/: accessed June 29, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .