Spatial Coverage
- Bologna (Italy)1
- Boston Harbor (Mass.)1
- Brazil, South1
- British Columbia1
- California1
- Castiglione della Pescaia (Italy)1
- Comstock Lode1
- Croton Aqueduct (N.Y.)1
- Dry Tortugas (Fla.)1
- Durham (England : County)1
- Edinburgh (Scotland)1
- England1
- Florida Keys (Fla.)1
- Fort Fisher (N.C. : Fort)1
- France1
- France.1
- Göteborg (Sweden)1
- Grand Traverse Bay Region1
- Grand Traverse Bay Region (Mich.)1
- Great Lakes Region (North America)1
