1. Geologic map of the Ariel quadrangle, Clark and Cowlitz counties, Washington Author/Creator: Evarts, Russell C. Publication/Creation: [Reston, Va.] : U.S. Geological Survey ; Denver, CO : USGS Information Services [distributor], 2004 Resource Type: Map Access & Availability: Loading
2. Geologic map of the Ridgefield quadrangle, Clark and Cowlitz Counties, Washington Author/Creator: Evarts, Russell C. Publication/Creation: [Reston, Va.?] : U.S. Geological Survey, 2004 Resource Type: Map Edition: Version 1.1. Access & Availability: Loading
3. Geologic map of the Saint Helens quadrangle, Columbia County, Oregon, and Clark and Cowlitz counties, Washington Author/Creator: Evarts, Russell C. Publication/Creation: [Reston, Va.] : U.S. Geological Survey ; Denver, CO : USGS Information Services [distributor], 2004 Resource Type: Map Access & Availability: Loading
4. Geologic map of the Woodland quadrangle, Clark and Cowlitz counties, Washington Author/Creator: Evarts, Russell C. Publication/Creation: [Reston, Va.] : U.S. Geological Survey ; Denver, CO : USGS Information Services [distributor], 2004 Resource Type: Map Access & Availability: Loading