Farmers' and Business Men's Co-Operative Association. The May Bugle. (May, Okla.), Vol. 11, No. 17, Ed. 1 Thursday, July 15, 1915, newspaper, July 15, 1915; (https://gateway.okhistory.org/ark:/67531/metadc941128/m1/1/: accessed July 17, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .