1. Sea floor image maps showing topography, sun-Illuminated topography, backscatter intensity, ruggedness, slope, and the distribution of boulder ridges and bedrock outcrops in the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts Author/Creator: Valentine, Page C. Publication/Creation: [Woods Hole, MA] : U.S. Geological Survey ; Denver, CO : Information Services [distributor], 2005 Resource Type: Map Edition: Version 1.0. Access & Availability: Loading