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 Data type Polygon Remove constraint Data type: Polygon Year 1990 Remove constraint Year: 1990
1990. Geological Survey (U.S.). This polygon shapefile portrays the 1990 state and county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer ... Geological Survey (U.S.).