Cottonwood Oil Company, Newcastle, WY No description specified. 1-2 (2 Records) Documents Letter Report: Archeological Survey of Well Site; Cottonwood Oil Company #2 Federal-Cottonwood, Weston County, Wyoming (1981) Letter Report: Archeological Survey of Well Site; Cottonwood Oil Company #3 Cottonwood Federal, Weston County, Wyoming (1981)