Mangum Sun-Monitor. (Mangum, Okla.), Vol. 22, No. 46, Ed. 1 Thursday, July 18, 1912, newspaper, July 18, 1912; (https://gateway.okhistory.org/ark:/67531/metadc284769/m1/1/: accessed April 23, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .