Petree, Elmer. The Calumet Chieftain (Calumet, Okla.), Vol. 10, No. 40, Ed. 1 Thursday, May 2, 1918, newspaper, May 2, 1918; (https://gateway.okhistory.org/ark:/67531/metadc168155/m1/1/: accessed October 17, 2018), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .