The Pony Express (Carthage, Tex.), Vol. 22, No. 5, Ed. 1 Thursday, February 18, 1971, newspaper, February 18, 1971; (https://texashistory.unt.edu/ark:/67531/metapth508070/m1/4/: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu.; .