Mangum Weekly Star. (Mangum, Okla.), Vol. 23, No. 51, Ed. 1 Thursday, June 15, 1911, newspaper, June 15, 1911; (https://gateway.okhistory.org/ark:/67531/metadc284586/m1/1/: accessed November 20, 2017), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .