Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 61, No. 191, Ed. 1 Friday, April 25, 1975, newspaper, April 25, 1975; (https://gateway.okhistory.org/ark:/67531/metadc1496934/m1/1/: accessed June 11, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .