The Mustang Enterprise (Oklahoma [Mustang], Okla.), Vol. 9, No. 19, Ed. 1 Thursday, May 1, 1913, newspaper, May 1, 1913; (https://gateway.okhistory.org/ark:/67531/metadc158085/m1/1/: accessed December 10, 2018), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .