The Graduate Center Library holds The Columbia Gazetteer of the World (in the reference collection and online) and a collection of maps and atlases in print and online.
Atlases: Look for print atlases on the reference shelves under the Call Letter G and in the Atlas Case, which is located just before the reference shelves on the 2nd floor of the library, a short way from the reference desk.
Maps: You can also search for printed and electronic maps in OneSearch. Select the Advanced Search, add a place name as a Subject term (e.g., "New York") and enter the word "Maps" as an additional Subject term. Press Search to see results.
"Specializ[ing] in the development of online applications that provide intuitive access to powerful data sets, displayed visually through interactive maps and in other formats." Projects include Welcome to 1940s New York, Open Accessible Space Information System (OASIS) in NYC, Visualizing Demographic Change: NYC and other major cities, and many others.
The Getty Thesaurus of Geographic Names ® (TGN) "is a structured vocabulary, including names, descriptions, and other metadata for extant and historical cities, empires, archaeological sites, and physical features important to research of art and architecture ... intended to aid cataloging, research, and discovery."