| Dubbed "Megalopolis" in 1961, the densely populated 500-mile swath of eastern cities is highlighted with the "Boston to Washington, Megalopolis" map.  Published in July 1994, this work is half of a two-map set with the "Boston to Washington, Circa 1830" historical map.The 1994 Boston to Washington Megalopolis map features: •  An introduction
 •  Cities and towns
 •  Interstate highways, divided highways, other roads, ferries, canals, passenger railroad, airports, and international airports
 •  Urban areas
 •  Population figures for Boston, New York, Philadelphia, Baltimore, and Washington
 •  Maximum vessel depth in feet for selected ports
 •  Rivers, lakes, and swamps
 
 Coverage Area:  Rhode Island, Connecticut, Delaware, Massachusetts, New Jersey, Maryland, southern New York, southeastern New Hampshire, eastern Pennsylvania, northern Virginia
 
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