Oklahoma Labor Unit (Oklahoma City, Okla.), Vol. 8, No. 20, Ed. 1 Saturday, November 6, 1915, newspaper, November 6, 1915; (https://gateway.okhistory.org/ark:/67531/metadc157276/m1/1/: accessed June 14, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .