21. Geologic and structure map, with contours on top of the Pierre Shale, for the south half of the Powder River Basin, 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 and structure maps of the Kalispell 1° x 2° quadrangle, Montana, and Alberta and British Columbia Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
23. Geologic and structure-contour map of the Raton 30ʹ x 60ʹ quadrangle, Colfax and Union counties, New Mexico, and Las Animas County, Colorado Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
24. Geologic map and cross sections of the central and southern Highland Mountains, southwestern Montana Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Information Services Resource Type: Map Access & Availability: Loading
25. Geologic map and fold- and thrust-belt interpretation of the southeastern part of the Charley River quadrangle, east-central Alaska Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, VA : The Survey ; Fairbanks, AK : Alaska Distribution Section ; Denver, CO : For sale by Map Distribution, 1992 Resource Type: Map Access & Availability: Loading
26. Geologic map and geochronology of the Precambrian and adjacent rocks of the Dodge Ranch--Ayres Spring area, Albany County, Wyoming Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Information Services Resource Type: Map Access & Availability: Loading
27. Geologic map and structure sections of the Clear Lake volcanics, northern California Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : U.S. Geological Survey Information Services [distributor]. Resource Type: Map Access & Availability: Loading
28. Geologic map and structure sections of the Sierra Juárez, Chihuahua, Mexico Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
29. Geologic map and summary geochronology of the Anchorage 1° x 3° quadrangle, southern Alaska Author/Creator: Geological Survey (U.S.) Publication/Creation: Fairbanks, AK : Alaska Distribution Section Resource Type: Map Access & Availability: Loading
30. Geologic map, cross sections, isotopic dates, and mineral deposits of the Alamo Lake 30ʹ x 60ʹ quadrangle, west-central Arizona Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : U.S. Geological Survey Information Services [distributor] Resource Type: Map Access & Availability: Loading