Soule, J. S. Farmers' Champion (Elgin, Okla.), Vol. 3, No. 35, Ed. 1, Thursday, June 12, 1913, newspaper, June 12, 1913; (https://gateway.okhistory.org/ark:/67531/metadc69510/m1/3/: accessed August 16, 2022), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .