Oklahoma Labor Unit (Oklahoma City, Okla.), Vol. 6, No. 15, Ed. 1 Saturday, September 27, 1913, newspaper, September 27, 1913; (https://gateway.okhistory.org/ark:/67531/metadc157167/m1/1/: accessed April 23, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .