1. Geologic map of the Bailey 30ʹ by 60ʹ quadrangle, north-central Colorado Author/Creator: Ruleman, C. A. (Chester Allan), cartographer, writer of added text Publication/Creation: Denver, Colo. : For sale by U.S. Geological Survey, Information Services Resource Type: Map Access & Availability: Loading
2. Under trees and water at Crater Lake National Park, Oregon Author/Creator: Robinson, Joel E., cartographer Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 2012 Resource Type: Map Access & Availability: Loading