Cimarron Valley Clipper (Coyle, Okla.), Vol. 11, No. 16, Ed. 1 Thursday, September 7, 1911, newspaper, September 7, 1911; (https://gateway.okhistory.org/ark:/67531/metadc910400/m1/4/: accessed April 20, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .