Ellsworth, George E. The Norman Daily Post. (Norman, Okla.), Vol. 1, No. 65, Ed. 1 Thursday, June 6, 1918, newspaper, June 6, 1918; (https://gateway.okhistory.org/ark:/67531/metadc111296/m1/1/: accessed February 20, 2019), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .