The Mangum Star (Mangum, Okla.), Vol. 33, No. 11, Ed. 1 Wednesday, August 25, 1920, newspaper, August 25, 1920; (https://gateway.okhistory.org/ark:/67531/metadc283990/m1/1/: accessed April 17, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .