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Scale: 1:200000; Relief Symbology: contours; Map Type: Topographic maps; Other Descriptive Notes about Map Series: Set includes various issues... United States. Army Map Service.
1992. Harvard Map Collection, Harvard Library and Massachusetts. Department of Public Works. This layer is a georeferenced raster image of the historic paper map entitled: Region G (Merrimack Valley and MAPC North) : functional classificati... Harvard Map Collection, Harvard Library.
Harvard Map Collection, Harvard Library and Metropolitan Area Planning Council (Boston, Mass.). This layer is a georeferenced raster image of the historic paper map entitled: Metroplan 2000 : definitive transpo[rtation] map / Metropolitan Area... Harvard Map Collection, Harvard Library.
1825. Harvard Map Collection, Harvard College Library, Hales, John Groves., and Throop, John Peter Van Ness, 1794-ca. 1861. This layer is a georeferenced raster image of the historic paper map entitled: The county of Essex, made by John G. Hales ; engraved by J.V.N. Thro... Harvard Map Collection, Harvard College Library.
1856. Harvard Map Collection, Harvard College Library, Walling, Henry Francis, 1825-1888., Smith & Morely., Bracher, Wm. (William), Worley, George., and Hitchcock, Edward, 1828-1911. This layer is a georeferenced raster image of the historic paper map entitled: A topographical map of Essex County, Massachusetts : based upon the ... Harvard Map Collection, Harvard College Library.
1984. Geological Survey (U.S.). This layer is a digital raster graphic of the 30 x 60 Minute USGS topographic map of the Gloucester, Massachusetts quadrangle, 1984. Scale 1:100,00... United States Geological Survey.
Harvard Map Collection, Harvard Library and Metropolitan Area Planning Council (Boston, Mass.). This layer is a georeferenced raster image of the historic paper map entitled: Metroplan 2000 :[level of service map] / Metropolitan Area Planning ... Harvard Map Collection, Harvard Library.
1985. Geological Survey (U.S.). This layer is a digital raster graphic of the 7.5 x 15 Minute USGS topographic map of the Ipswich, Massachusetts quadrangle, 1985. Scale 1:25,000. ... United States Geological Survey.
1886. Harvard Map Collection, Harvard College Library. This layer is a digital raster graphic of the historic 15-minute USGS topographic map of the Lawrence, Massachusetts quadrangle. The survey date (g...
1987. Geological Survey (U.S.). This layer is a digital raster graphic of the 7.5 x 15 Minute USGS topographic map of the Lawrence, Massachusetts quadrangle, 1987. Scale 1:25,000.... United States Geological Survey.