Henderson, Virgil L. State Sentinel (Stigler, Okla.), Vol. 16, No. 15, Ed. 1 Thursday, July 7, 1921, newspaper, July 7, 1921; (https://gateway.okhistory.org/ark:/67531/metadc99882/m1/1/: accessed November 14, 2018), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .