Mangum Sun-Monitor. (Mangum, Okla.), Vol. 13, No. 14, Ed. 1 Thursday, April 2, 1903, newspaper, April 2, 1903; (https://gateway.okhistory.org/ark:/67531/metadc285777/m1/8/: accessed April 23, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .