Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 53, No. 275, Ed. 1 Wednesday, July 31, 1968, newspaper, July 31, 1968; (https://gateway.okhistory.org/ark:/67531/metadc1492105/m1/1/: accessed July 12, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .