The Mathis News (Mathis, Tex.), Vol. 50, No. 5, Ed. 1 Thursday, February 1, 1973, newspaper, February 1, 1973; (https://texashistory.unt.edu/ark:/67531/metapth1055545/m1/1/: accessed June 5, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .