Wandell, Clarence F. Cimarron Valley Clipper (Coyle, Okla.), Vol. 20, No. 36, Ed. 1 Thursday, April 7, 1921, newspaper, April 7, 1921; (https://gateway.okhistory.org/ark:/67531/metadc911786/m1/1/: accessed October 17, 2018), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .