Geologic Map of the Sundance 30' x 60' Quadrangle, Crook and Weston Counties, Wyoming, and Lawrence and Pennington Counties, South Dakota (2007)

Sutherland, W.M., 2007, Geologic map of the Sundance 30' x 60' quadrangle, Crook and Weston counties, Wyoming, and Lawrence and Pennington counties, South Dakota: Wyoming State Geological Survey Map Series 78, 26 p., scale 1:100,000.