Cimarron Valley Clipper (Coyle, Okla.), Vol. 19, No. 50, Ed. 1 Thursday, May 6, 1920, newspaper, May 6, 1920; (https://gateway.okhistory.org/ark:/67531/metadc912634/m1/1/: accessed April 23, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .