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Creator
- United States Census Bureau2
- Brown County Survey Department1
- City of Milwaukee Information and Technology Management Division-GIS Section1
- Colorado Department of Transportation1
- Hobbs, Howard C.1
- Michigan Center for Geographic Information1
- Ohio. Division of Geological Survey1
- Peterson, Dean M.1
- Runkel, Anthony C.1
- Wisconsin Department of Administration1
- Wisconsin Department of Natural Resources1