The Oklahoma Advance (Oklahoma City, Okla.), Vol. 1, No. 8, Ed. 1 Thursday, April 20, 1922, newspaper, April 20, 1922; (https://gateway.okhistory.org/ark:/67531/metadc936430/m1/1/: accessed April 25, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .