Tulsa Daily World (Tulsa, Okla.), Vol. 13, No. 255, Ed. 1 Saturday, June 1, 1918, newspaper, June 1, 1918; (https://gateway.okhistory.org/ark:/67531/metadc135730/m1/12/: accessed July 11, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .