erc: who: Duffey, P. P. what: Oklahoma Agriculturist (El Reno, Okla.), Vol. 1, No. 16, Ed. 1 Thursday, October 25, 1906 when: 19061025 where: https://gateway.okhistory.org/ark:/67531/metadc911957/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://gateway.okhistory.org/ark:/67531/