Cimarron Valley Clipper (Coyle, Okla.), Vol. 14, No. 17, Ed. 1 Thursday, September 9, 1915, newspaper, September 9, 1915; (https://gateway.okhistory.org/ark:/67531/metadc910510/m1/1/: accessed April 24, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .