Cimarron Valley Clipper (Coyle, Okla.), Vol. 10, No. 47, Ed. 1 Thursday, April 13, 1911, newspaper, April 13, 1911; (https://gateway.okhistory.org/ark:/67531/metadc910478/m1/1/: accessed April 25, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .