21. Correlation chart of lower and upper Cretaceous Blackleaf Formation, eastern Pioneer Mountains, southwestern Montana, to Drummond, central-western Montana 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 the Powder River Basin and surrounding area, Wyoming, Montana, South Dakota, North Dakota, and Nebraska Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
23. Mineral resource potential maps of the Anchorage 1⁰ x 3⁰ quadrangle, southern Alaska Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
24. Geologic map of the northern part of the Piceance Creek basin, northwestern Colorado Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
25. Map showing the distribution of surficial sediments in Fishers Island Sound, New York, Connecticut, and Rhode Island Publication/Creation: Denver, CO : For sale by Information Services Resource Type: Map Access & Availability: Loading
26. Physiography and sediment distribution of Indiana Shoals, southern Lake Michigan Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
27. Geologic map of the Klamath Mountains, California and Oregon Author/Creator: Irwin, W. P. 1919-2012 (William Porter) Publication/Creation: Denver, CO : For sale by U.S. Geological Survey, Map Distribution Resource Type: Map Access & Availability: Loading
28. Geologic map of Sullivan Draw and vicinity, Mohave County, northwestern Arizona Author/Creator: Billingsley, George H. Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
29. Geologic map of the Americus 30ʹ x 60ʹ quadrangle, Georgia and Alabama Author/Creator: Reinhardt, Juergen, 1946- Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
30. Geologic map of the Idaho National Engineering Laboratory and adjoining areas, eastern Idaho Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by U.S. Geological Survey Map Distribution Resource Type: Map Access & Availability: Loading