The National Map Viewer
There’s a great resource for those of you who use U.S. imagery in their projects. The National Map Viewer is a great resource. Also, be sure to check out Brian Hailey’s post from last year – An Alternative to Google Earth. He highlights the accuracy issue and provides some instruction for using the national map viewer (previously called seamless viewer). Brian includes a link in his article to a Being Civil post that provides detail for this issue. Check it out.