The Lawton Constitution (Lawton, Okla.), Vol. 16, No. 219, Ed. 1 Saturday, April 21, 1917, newspaper, April 21, 1917; (https://gateway.okhistory.org/ark:/67531/metadc129427/m1/1/: accessed December 14, 2018), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .