The Evening Free Press (Oklahoma City, Okla.), Vol. 1, No. 160, Ed. 1 Friday, May 19, 1911, newspaper, May 19, 1911; (https://gateway.okhistory.org/ark:/67531/metadc151806/m1/1/: accessed April 18, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .