Coppage, Everett B. The Helena Star (Helena, Okla.), Vol. 6, No. 18, Ed. 1 Thursday, May 11, 1911, newspaper, May 11, 1911; (https://gateway.okhistory.org/ark:/67531/metadc1726290/m1/1/: accessed July 16, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .