Drumright Evening Derrick (Drumright, Okla.), Vol. 6, No. 36, Ed. 1 Wednesday, July 13, 1921, newspaper, July 13, 1921; (https://gateway.okhistory.org/ark:/67531/metadc163437/m1/1/: accessed November 20, 2017), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .