Cimarron Valley Clipper (Coyle, Okla.), Vol. 15, No. 13, Ed. 1 Thursday, August 17, 1916, newspaper, August 17, 1916; (https://gateway.okhistory.org/ark:/67531/metadc910526/m1/1/: accessed June 10, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .