The Pony Express (Carthage, Tex.), Vol. 16, No. 4, Ed. 1 Tuesday, December 15, 1964, newspaper, December 15, 1964; (https://texashistory.unt.edu/ark:/67531/metapth507897/m1/1/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .