1. Geologic map of the north polar region of Mars Author/Creator: Tanaka, Kenneth L. Publication/Creation: [Reston, Va.?] : U.S. Geological Survey ; Denver, CO : For sale by the U.S. Geological Survey, Information Services, 2012 Resource Type: Map Access & Availability: Loading
2. Geologic map of Mars Author/Creator: Tanaka, Kenneth L., cartographer Publication/Creation: [Reston, Va.] : U.S. Geological Survey, 2014 Resource Type: Map Access & Availability: Loading
3. 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