The El Reno Daily Tribune (El Reno, Okla.), Vol. 49, No. 57, Ed. 1 Monday, May 6, 1940, newspaper, May 6, 1940; (https://gateway.okhistory.org/ark:/67531/metadc919649/m1/1/: accessed April 19, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .