The Greer County Democrat (Mangum, Okla.), Vol. 25, No. 41, Ed. 1 Thursday, June 24, 1915, newspaper, June 24, 1915; (https://gateway.okhistory.org/ark:/67531/metadc282194/m1/1/: accessed March 24, 2025), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .