Geologic Map of the Gillette 1° x 2° Quadrangle, Northeastern Wyoming and Western South Dakota (1990)

Love, J.D., Christiansen, A.C., McGrew, L.W., and King, J.K., 1990, Geologic map of the Gillette 1° x 2° quadrangle, northeastern Wyoming and western South Dakota: Geological Survey of Wyoming [Wyoming State Geological Survey] Map Series 25-G, scale 1:250,000.