National Geographic Offering Free Printable USGS Topo Maps

Talk about a map lovers dream! Providing more or less 100% coverage of the United States, National Geographic has created a tool that lets you find any 7.5 minute top map in the continental United States. From there you can download the map and print if you'd like for free. The Topo Maps have been edited so you can easily print on a letter-sized printer (ie, each quad has been cut into 4 pages that can each print to standard sized letter paper).