Drumright Evening Derrick (Drumright, Okla.), Vol. 5, No. 349, Ed. 1 Saturday, May 14, 1921, newspaper, May 14, 1921; (https://gateway.okhistory.org/ark:/67531/metadc163365/m1/1/: accessed October 18, 2018), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .