Have you ever come across a place name in your research you aren’t sure still exists? What about a post office name given in a census that isn’t the main town? A town in a country you know little about? Looking for cemeteries near your ancestral home? The Geographic Names Information System (GNIS) and NGA GEOnet Names Server (GNS) can help with each of these.
( https://tcgs1961.blogspot.com/2017/10/finding-place-names-using-gnis-and-gns.html )