Cimarron Valley Clipper (Coyle, Okla.), Vol. 21, No. 4, Ed. 1 Thursday, August 25, 1921, newspaper, August 25, 1921; (https://gateway.okhistory.org/ark:/67531/metadc911809/m1/1/: accessed April 24, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .