Oklahoma Labor (Oklahoma City, Okla.), Vol. 2, No. 44, Ed. 1 Thursday, September 16, 1937, newspaper, September 16, 1937; (https://gateway.okhistory.org/ark:/67531/metadc2104527/m1/1/: accessed July 18, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .