The Mangum Mirror (Mangum, Okla.), Vol. 1, No. 35, Ed. 1 Tuesday, July 17, 1917, newspaper, July 17, 1917; (https://gateway.okhistory.org/ark:/67531/metadc281257/m1/3/: accessed July 17, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .