Western Oil Derrick (Oklahoma City, Okla.), Vol. 4, No. 8, Ed. 1 Saturday, August 21, 1920, newspaper, August 21, 1920; (https://gateway.okhistory.org/ark:/67531/metadc152277/m1/1/: accessed April 18, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .