The Mangum Star. (Mangum, Okla.), Vol. 22, No. 40, Ed. 1 Thursday, March 31, 1910, newspaper, March 31, 1910; (https://gateway.okhistory.org/ark:/67531/metadc280590/m1/1/: accessed June 19, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .