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[Photograph 2012.201.B0957.0437]

Description: Photograph used for a story in the Daily Oklahoman newspaper. Caption: "This was the name given this large tractor converted from farm to oilfield use by the Sinclair Oil & Gas Co. in the Cushing boom days at Glenn Pool field. A Sinclair superintendent needing a string of casing in a hurry couldn't get teams, so he bought this power unit from a farmer."
Date: April 23, 1939
Partner: Oklahoma Historical Society