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Collection
- Pennsylvania Spatial Data Access (PASDA)67
- Large Scale Hydrography Network52
- Large Scale Hydrography Surface Water Areas52
- IndianaMAP16
- TIGER/Line Files16
- Minnesota Geological Survey12
- General11
- BYTES of the BIG APPLE4
- Indiana Historic Maps4
- Polar Geospatial Center3
- Arizona Geologic Faults1
- Arizona Geological Survey1
- Illinois Geospatial Data Clearinghouse1
- Open Baltimore1
- Purdue Georeferenced Imagery1
- Wisconsin Counties Open Data1