The Pony Express (Carthage, Tex.), Vol. 21, No. 2, Ed. 1 Wednesday, October 8, 1975, newspaper, October 8, 1975; (https://texashistory.unt.edu/ark:/67531/metapth507960/m1/1/: accessed May 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .