Mangum Sun-Monitor. (Mangum, Okla.), Vol. 18, No. 43, Ed. 1 Thursday, July 30, 1908, newspaper, July 30, 1908; (https://gateway.okhistory.org/ark:/67531/metadc285189/m1/1/: accessed April 18, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .