Borders, Joe & French, Brenda. The Pony Express (Carthage, Tex.), Vol. 21, No. 1, Ed. 1 Tuesday, September 30, 1969, newspaper, September 30, 1969; (https://texashistory.unt.edu/ark:/67531/metapth507876/m1/1/: accessed August 25, 2019), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .