Farmers' and Business Men's Co-Operative Association. The May Bugle. (May, Okla.), Vol. 11, No. 50, Ed. 1 Thursday, March 2, 1916, newspaper, March 2, 1916; (https://gateway.okhistory.org/ark:/67531/metadc941012/m1/1/: accessed November 13, 2018), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .