Farmers' and Business Men's Co-Operative Association. The May Bugle. (May, Okla.), Vol. 10, No. 47, Ed. 1 Thursday, February 11, 1915, newspaper, February 11, 1915; (https://gateway.okhistory.org/ark:/67531/metadc941044/m1/1/: accessed April 25, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .