Idaho's statewide geospatial data clearinghouse -- Download data about Idaho http://inside.uidaho.edu/
Digital Chart of the World -- http://worldmap.harvard.edu/data/geonode:Digital_Chart_of_the_World The Digital Chart of the World.
Digital Earth Explorer by the USGS -- http://earthexplorer.usgs.gov/
The National Atlas USGS -- http://nationalmap.gov/ Links to small scale datasets, historical topographic maps and many more.
National Geographic MapMaker Interactive -- http://mapmaker.education.nationalgeographic.com/?ar_a=1&b=1&ls=000000000000 Create your own map by adding map layers of your choice.
Nature Mapping Program in Washington -- http://www.fish.washington.edu/naturemapping/ Nature Mapping Program in the state of Washington.
Raven Maps and Images -- http://www.ravenmaps.com/ This site is the on-line gallery of Raven Maps and Images.