1. Geologic map of Newberry Volcano, Deschutes, Klamath, and Lake counties, Oregon Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : U.S. Geological Survey Information Services, [distributor]. Resource Type: Map Access & Availability: Loading
2. Geologic map of the Mount Adams volcanic field, Cascade Range of southern Washington Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : U.S. Geological Survey Information Services [distributor] Resource Type: Map Access & Availability: Loading