1. Geologic map of Mount Mazama and Crater Lake Caldera, Oregon Author/Creator: Ramsey, David W. Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2008 Resource Type: Map Access & Availability: Loading
2. A new perspective on Mount St. Helens, dramatic landform change and associated hazards at the most active volcano in the Cascade Range Author/Creator: Ramsey, David W. Publication/Creation: [Reston, Va.] : U.S. Dept. of the interior, U.S. Geological Survey, 2008 Resource Type: Map Access & Availability: Loading