Oklahoma State Labor News (Oklahoma City, Okla.), Vol. 1, No. 39, Ed. 1 Friday, January 25, 1907, newspaper, January 25, 1907; (https://gateway.okhistory.org/ark:/67531/metadc154750/m1/1/: accessed April 16, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .