The Mangum Star. (Mangum, Okla. Terr.), Vol. 16, No. 7, Ed. 1 Thursday, August 20, 1903, newspaper, August 20, 1903; (https://gateway.okhistory.org/ark:/67531/metadc281266/m1/1/: accessed April 24, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .