GEOnet Names Server
- searchable database of place names and features outside the U.S., developed by the
National Imagery and Mapping
Agency.
Getty Thesaurus of Geographic Names -
search on place and feature names worldwide. Results identify location contextually, i.e.
what state or province a city is in, and by coordinates.
U.S. Geographic Names Information
System - find out where a city or other feature such as a mountain or lake is in the
United States.
U.S. Geographic Nameserver at MIT