Farmers' and Business Men's Co-Operative Association. The May Bugle. (May, Okla.), Vol. 12, No. 10, Ed. 1 Thursday, May 25, 1916, newspaper, May 25, 1916; (https://gateway.okhistory.org/ark:/67531/metadc941075/m1/1/: accessed October 19, 2018), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .