11. Geologic map showing thickness of the upper Cretaceous Pierre Shale in the north half of the Powder River Basin, southeastern Montana and northeastern Wyoming Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
12. Geologic map showing thickness of the upper Cretaceous Pierre Shale in the south half of the Powder River Basin, northeastern Wyoming and adjacent areas Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
13. Geologic maps of upper Cenozoic deposits in central California Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, VA : U.S. Geological Survey ; Denver, CO : For sale by U.S. Geological Survey, Map Distribution, 1993 Resource Type: Map Access & Availability: Loading
14. Geologic map of Precambrian metasedimentary rocks of the Medicine Bow Mountains, Albany and Carbon counties, Wyoming Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
15. Geologic map of Precambrian rocks, southern Lake Superior region, Wisconsin and northern Michigan Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, Va. : U.S. Geological Survey, 1992 Resource Type: Map Access & Availability: Loading
16. Geologic map of late Cenozoic deposits and faults in the western part of the Rhyolite Ridge 15ʹ quadrangle, Esmeralda County, Nevada Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading