The Pony Express (Carthage, Tex.), Vol. 37, No. 6, Ed. 1 Wednesday, February 11, 1987, newspaper, February 11, 1987; (https://texashistory.unt.edu/ark:/67531/metapth591940/m1/1/: accessed October 17, 2019), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .