You searched for: Author Geological Survey (U.S.) Remove constraint Author: Geological Survey (U.S.) Access Public Remove constraint Access: Public Subject Boundaries Remove constraint Subject: Boundaries Place Massachusetts Remove constraint Place: Massachusetts Place Arizona Remove constraint Place: Arizona Place Alaska Remove constraint Place: Alaska Data type Polygon Remove constraint Data type: Polygon 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.).