The Ringwood Leader. (Ringwood, Okla.), Vol. 18, No. 22, Ed. 1 Thursday, March 21, 1918, newspaper, March 21, 1918; (https://gateway.okhistory.org/ark:/67531/metadc1722875/m1/2/: accessed July 17, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .