Zimmerman, Warren. The Guymon Herald. (Guymon, Okla.), Vol. 19, No. 6, Ed. 1 Thursday, April 22, 1909, newspaper, April 22, 1909; (https://gateway.okhistory.org/ark:/67531/metadc272698/m1/1/: accessed August 16, 2018), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .