1. Geologic map of the Red Bluff 30ʹ x 60ʹ quadrangle, California Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : Map Distribution [distributor] Resource Type: Map Access & Availability: Loading
2. Geologic map of the Snoqualmie Pass 30 x 60 minute quadrangle, Washington Publication/Creation: Denver, CO : Information Services [distributor] Resource Type: Map Access & Availability: Loading
3. Geologic map of upper Eocene to Holocene volcanic and related rocks of the Cascade Range, Oregon Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : Map Distribution [distributor] Resource Type: Map Access & Availability: Loading