The Mangum Star (Mangum, Okla.), Vol. 30, No. 4, Ed. 1 Thursday, July 12, 1917, newspaper, July 12, 1917; (https://gateway.okhistory.org/ark:/67531/metadc281312/m1/1/: accessed June 8, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .