1. Bedrock geologic map of Vermont Author/Creator: Ratcliffe, Nicholas M. 1938- (Nicholas Morley) Publication/Creation: [Reston, Va.] : U.S. Dept, of the Interior, U.S. Geological Survey, 2011 Resource Type: Map Access & Availability: Loading
2. Quaternary geologic map of the Ottawa 4° x 6° quadrangle, United States and Canada Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, Va. : U.S. Geological Survey ; Denver, CO : For sale by Map Distribution, 1993 Resource Type: Map Access & Availability: Loading