The National Archives Catalog

Geographic Authority File

The Getty Thesaurus of Geographic Names® (TGN) provided initial data values for the Geographic Reference and Jurisdiction elements.

NARA has been adding to and updating TGN to meet our descriptive needs. The Geographic Authority File is available through ARC; you can also browse the TGN itself through the Getty website at

You can also view listings of the Geographic Place Types searchable in the ARC Data Entry system. You can view an alphabetical list of the Place Types, or a list organized by type of Place Type.