The Mangum Star. (Mangum, Okla.), Vol. 21, No. 36, Ed. 1 Thursday, March 4, 1909, newspaper, March 4, 1909; (https://gateway.okhistory.org/ark:/67531/metadc281242/m1/2/: accessed June 30, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .