American Memory Project
Library of Congress online map collections.
The CIA Maps series has now gone online only. Search by location or publication.
Dictionary of Abbreviations and Acronyms in GIS, Cartography, and Remote Sensing
Decodes abbreviations and acronyms found in various publications including maps and websites.
Use EPA spatial data at national, state, and county levels.
ESRI Geography Network
Access to GIS information and geographic tools.
GNIS - Geographic Names Information System
USGS database of almost 2 million physical and cultural geographic features in the United States.
Bing Maps - MapBlast
Map creation and driving directions. Choose the "locate anything" tab to get latitude and longitude for any location.
Map History on the Web
Links to historic map collections by the British Library.
View, print or e-mail topographical, aeronautical, and nautical maps free.
Features include an interactive atlas and personalized maps.
National Atlas of the United States
Design and explore your own maps or view interactive multimedia maps.
NHGIS - National Historical Geographic Information System
Sponsored by the Minnesota Population Center, this site provides free, aggregate census data and GIS-compatible boundary files for the U.S. from 1790 to 2000.
New Hampshire statewide geographic information system.
Old Maps Online
Gateway to historical maps in libraries around the world. Collaboration between the Great Britain Historical GIS Project, of the University of Portsmouth, and Klokan Technologies GmbH, based in Switzerland.
Library of Congress collection of panoramic maps.
David Rumsey Collection
Extensive historical map collection.
Union List of Sanborn & Other Fire Insurance Maps
The UC Berkeley Earth Sciences and Map Library has a Union List of Sanborn and Other Fire Insurance Maps that indicates both owning institutions and maps that are available online.
Image Gallery: Astrium GeoInformation
Browsable image archive.
TIGER Geography - US Census Bureau
A simple way to view our TIGER (Topologically Integrated Geographic Encoding and Referencing database) data without having to download the data
United Nations Cartographic Section
Two primary map collections, general and mission, available in PDF format.