National Atlas of the United States of America
http://www-atlas.usgs.gov/

USGS

This site from the USGS features a new portrayal of America in maps. Using new technologies the site provides an on-line atlas of maps and various ways to use them. Maps may be customized for viewing, printing, or downloading. There is also documented, accurate, reliable, and integrated data to use in a GIS applications.

Subject: Geoscience:Geology
Resource Type: Audio/Visual:Maps, Datasets and Tools:Datasets with Tools
Special Interest: Visualization
Topics: Earth surface
Data Source: Observational Data
Data Derived: Data Derived
Science Background Required: Broadly accessible