The Oklahoma Farmer and Laborer (Sapulpa, Okla.), Vol. 4, No. 30, Ed. 1 Friday, May 7, 1915, newspaper, May 7, 1915; (https://gateway.okhistory.org/ark:/67531/metadc102047/m1/1/: accessed April 19, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .