Subject Librarian
Lucinda M. Hall
Contact:
Evans Map Room, Baker-Berry Library
Dartmouth College
25 N Main ST
Hanover, NH 03755
Dartmouth College
25 N Main ST
Hanover, NH 03755
(603) 646-0962
Website Skype Contact: d1128r8@kiewit.dartmouth.edu
Topographic maps
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National Map Seamless ServerUnlike The National Map, there are no obvious joins between the various topographic maps the USGS produces. Using coordinates is best to get the area(s) you want.
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The National MapYou can download individual topographic maps in GeoPDF format.
Geographic data for the US (2008)
Most of the files available for download are zipped files. They either contain all the available files for a country or region or a theme layer. These are data layers from ESRI that accompany the ArcGIS software. For definitions about the different layers, please see the ESRI Data & Maps 9.3 White Paper.
Historical United States County Boundaries (HUSCO)
For more information about these boundary files, look at the record in the online catalog.