Mangum Sun-Monitor. (Mangum, Okla.), Vol. 15, No. 21, Ed. 1 Thursday, May 18, 1905, newspaper, May 18, 1905; (https://gateway.okhistory.org/ark:/67531/metadc285465/m1/1/: accessed April 24, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .