The Mangum Star And Southwest Eagle (Mangum, Okla.), Vol. 31, No. 8, Ed. 1 Thursday, August 8, 1918, newspaper, August 8, 1918; (https://gateway.okhistory.org/ark:/67531/metadc276382/m1/1/: accessed April 18, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .