Tools for Finding Dark Sky Sites
Topozone: High detail topo maps of the U.S.
Mapquest: Good for driving direction and estimating travel time
Terraserver: Satellite Photos
Puget Sound Dark Sky Map: Light pollution maps - The "link roadmap" and "link topomap" functions are great.
Google Earth with Light Pollution Overlays available for download from cleardarksky.com To get there, find a nearby clear sky clock, click on the "Light Pollution" link, and then click on the "image overlay" link right above the light pollution map.