Sand Springs Leader (Sand Springs, Okla.), Vol. 25, No. 51, Ed. 1 Thursday, April 13, 1939, newspaper, April 13, 1939; (https://gateway.okhistory.org/ark:/67531/metadc2202340/m1/4/: accessed July 5, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .