Structure Contour and Isopach Maps of the Fort Union Formation, Northern Powder River Basin, Northeastern Wyoming (2003)

Jones, N.R., Lyman, R.M., Ver Ploeg, A.J., De Bruin, R.H., Case, J.C., and Baxter, J.C., 2003, Structure contour and isopach maps of the Fort Union Formation, northern Powder River Basin, northeastern Wyoming: Wyoming State Geological Survey Open File Report 03-4.