Mangum Sun-Monitor. (Mangum, Okla.), Vol. 19, No. 17, Ed. 1 Thursday, January 21, 1909, newspaper, January 21, 1909; (https://gateway.okhistory.org/ark:/67531/metadc285950/m1/1/: accessed April 24, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .