The Greer County Democrat (Mangum, Okla.), Vol. 26, No. 25, Ed. 1 Thursday, March 2, 1916, newspaper, March 2, 1916; (https://gateway.okhistory.org/ark:/67531/metadc281776/m1/1/: accessed April 25, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .