1. Backscatter intensity, shaded relief, and sea floor topography of quadrangle 1 in western Massachusetts Bay offshore of Boston, Massachusetts Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, VA : U.S. Dept. of the Interior, U.S. Geological Survey, 2003 Format: Map Access & Availability: Loading
2. Backscatter intensity, shaded relief, and sea floor topography of quadrangle 2 in western Massachusetts Bay offshore of Boston, Massachusetts Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, VA : U.S. Dept. of the Interior, U.S. Geological Survey, 2003 Format: Map Access & Availability: Loading