Stafford, R. E. The Evening Free Press (Oklahoma City, Okla.), Vol. 1, No. 151, Ed. 1 Tuesday, May 9, 1911, newspaper, May 9, 1911; (https://gateway.okhistory.org/ark:/67531/metadc151797/m1/1/: accessed July 22, 2018), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .