Preliminary Geologic Map of the Newcastle 30’ x 60’ Quadrangle, Weston County, Wyoming and Western South Dakota (2005)

McLaughlin, J.F., and Ver Ploeg, A.J., 2005, Preliminary geologic map of the Newcastle 30’ x 60’ quadrangle, Weston County, Wyoming, and western South Dakota: Wyoming State Geological Survey Open File Report 05-4, scale 1:100,000.