Canadian Geographical Names - Server queries can be made by name or point coordinates for current, historical and undersea places and geographical features.
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 - Find place and feature names worldwide with the Getty Thesaurus of Place Names. Results include coordinates as well as contextual information such as state and province.
