The Oklahoma Leader (Oklahoma City, Okla.), Vol. 6, No. 55, Ed. 1 Saturday, July 31, 1920, newspaper, July 31, 1920; (https://gateway.okhistory.org/ark:/67531/metadc149138/m1/1/: accessed December 13, 2018), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .