You searched for: Author Geological Survey (U.S.) Remove constraint Author: Geological Survey (U.S.) Institution Stanford Remove constraint Institution: Stanford Place Maine Remove constraint Place: Maine Place New York (State) Remove constraint Place: New York (State) Place Connecticut Remove constraint Place: Connecticut Year 1980 Remove constraint Year: 1980
1980. Geological Survey (U.S.). This polygon shapefile contains the 1980 state and county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer ... Geological Survey (U.S.).