Oklahoma Federationist (Oklahoma City, Okla.), Vol. 9, No. 6, Ed. 1 Saturday, July 29, 1916, newspaper, July 29, 1916; (https://gateway.okhistory.org/ark:/67531/metadc2091639/m1/1/: accessed June 9, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .