US Gov't resources
Atlas of the US
US Census Bureau
US Census Bureau American FactFinder2
USGS/BGN Geographic Names site
Statistical Abstract of the U.S.
(After more than 130 years of publication, this compendium was
discontinued in 2011, a glaring disservice to both the ideal of
an informed citizenry in a democracy and to students of the United States.
An MA thesis on why this happened would be interesting and worthwhile.)
USGS Tapestry of Time and Terrain
USDA - National Agricultural Statistics Service (NASS)
USDA - GMU CropScape
NASS Quick Stats
Canadian Gov't Resources
Mexican Gov't Resources
Degree Confluence Project:
Photographs taken at integer latitude, longitude positions
Sperling's Best Places
gives a quick way to look up overview characteristics of places
by name or by zipcode.
The Gateway to Astronaut
Photography --- NASA Crew Earth Observations.
The "Find Photos" and "Image Quiz" links are especially cool,
Historical Atlas of the US. University of Richmond.
Mapping the Nation: History and Cartography in 19th
Century America website
Some topical web-bits
A non-map interactive graphic on interstate migration
The United Watersheds of America