Chickasha Daily Express (Chickasha, Okla.), Vol. 19, No. 111, Ed. 1 Thursday, May 9, 1918, newspaper, May 9, 1918; (https://gateway.okhistory.org/ark:/67531/metadc733191/m1/2/: accessed April 25, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .