Farmers' Champion (Elgin, Okla.), Vol. 6, No. 33, Ed. 1, Wednesday, May 3, 1916, newspaper, May 3, 1916; (https://gateway.okhistory.org/ark:/67531/metadc69659/m1/1/: accessed April 24, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .