Simpson, E. W. The Dover News. (Dover, Okla.), Vol. 8, No. 19, Ed. 1 Thursday, June 25, 1908, newspaper, June 25, 1908; (https://gateway.okhistory.org/ark:/67531/metadc106663/m1/1/: accessed September 21, 2018), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .