Structure Map of the Bearpaw/Pierre Shale, Northern Powder River Basin, Northeastern Wyoming (2003)

Lyman, R.M., De Bruin, R.H., Ver Ploeg, A.J., Jones, N.R., and Case, J.C., 2003, Structure map of the Bearpaw/Pierre Shale, northern Powder River Basin, northeastern Wyoming: Wyoming State Geological Survey Open File Report 03-3.