The Cimarron News. (Boise City, Okla.), Vol. 23, No. 48, Ed. 1 Thursday, June 30, 1921, newspaper, June 30, 1921; (https://gateway.okhistory.org/ark:/67531/metadc304934/m1/1/: accessed January 22, 2019), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .