1. Geologic map of the Cowlitz Falls quadrangle, Lewis and Skamania counties, Washington Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
2. Geologic map of the Spirit Lake east quadrangle, Skamania County, Washington Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
3. Geologic map of the Vanson Peak quadrangle, Lewis, Cowlitz, and Skamania counties, Washington Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading