CROSS SECTION SHOWING THE RECONSTRUCTED STRATIGRAPHIC FRAMEWORK OF PALEOCENE ROCKS AND COAL BEDS IN THE CENTRAL POWDER RIVER BASIN FROM DECKET TO BEAR SKULL MOUNTAIN, MONTANA; MISCELLANEOUS INVESTIGATIONS SERIES MAP I-1959-E, 1991
Washington, DC: United States Geological Survey/USGS/Government Printing Office/GPO, 1991. Map. Large folded sheet with descriptions. A fine as new sheet in near fine paper sleeve. More