Mangum Sun-Monitor. (Mangum, Okla.), Vol. 19, No. 15, Ed. 1 Thursday, January 7, 1909, newspaper, January 7, 1909; (https://gateway.okhistory.org/ark:/67531/metadc285922/m1/2/: accessed May 7, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .