21. Geologic map showing thickness of sedimentary rocks from ground surface to the top 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
22. Geologic map of Cretaceous strata between Birch Creek and Brownes Creek, eastern flank of Pioneer Mountains, Beaverhead County, Montana Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
23. 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
24. Geologic map of late Cenozoic deposits and faults in the southern part of the Davis Mountain 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
25. Quaternary geologic map of the Ozark Plateau 4° x 6° quadrangle, United States Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, VA : The Survey ; Denver, CO : For sale by Map Distribution, 1993 Resource Type: Map Access & Availability: Loading
26. Quaternary geologic map of the Monterrey 4° x 6° quadrangle, United States Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, VA : The Survey ; Denver, CO : For sale by Map Distribution, 1993 Resource Type: Map Access & Availability: Loading
27. Quaternary geologic map of the Wichita 4° x 6° quadrangle, United States Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, Va. : The Survey ; Denver, CO : For sale by Map Distribution, 1993 Resource Type: Map Access & Availability: Loading
28. Quaternary geologic map of the Ottawa 4° x 6° quadrangle, United States and Canada Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, Va. : U.S. Geological Survey ; Denver, CO : For sale by Map Distribution, 1993 Resource Type: Map Access & Availability: Loading
29. Quaternary geologic map of the Sudbury 4° x 6° quadrangle, United States and Canada Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, VA : The Survey ; Denver, CO : For sale by Map Distribution, 1993 Resource Type: Map Access & Availability: Loading
30. Quaternary geologic map of the Austin 4° x 6° quadrangle, United States Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, VA : The Survey ; Denver, CO : For sale by Map Distribution, 1993 Resource Type: Map Access & Availability: Loading