Jessee, Elmer V. The Mangum Star (Mangum, Okla.), Vol. 34, No. 16, Ed. 1 Thursday, September 29, 1921, newspaper, September 29, 1921; (https://gateway.okhistory.org/ark:/67531/metadc284093/m1/1/: accessed November 18, 2018), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .