1. Bedrock geologic map of the Mount Ascutney 7.5- x 15- minute quadrangle, Windsor County, Vermont, and Sullivan County, New Hampshire Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 2020 Resource Type: Map Access & Availability: Loading
2. Bedrock geologic map of the Spring Valley, West Plains, and parts of the Piedmont and Poplar Bluff 30' x 60' quadrangles, Missouri, including the upper Current River and Eleven Point River drainage basins Author/Creator: Weary, David J., cartographer Publication/Creation: Reston, VA : U.S. Department of the Interior, U.S. Geological Survey, 2014 Resource Type: Map Access & Availability: Loading