The Mangum Star. (Mangum, Okla. Terr.), Vol. 19, No. 52, Ed. 1 Thursday, June 27, 1907, newspaper, June 27, 1907; (https://gateway.okhistory.org/ark:/67531/metadc282042/m1/1/: accessed April 23, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .