File:National road map.png

Description: Map of the National Road about 1839 from Cumberland, Maryland to Vandalia, Illinois. Drawn by: Original uploader was Citynoise at en.wikipedia. Date: 16 June 2006. Source: "National Road" in Wikipedia: the Free Encyclopedia at http://en.wikipedia.org/wiki/National_Road (4 October 2010). Permission: ''This file is licensed under the Creative Commons Attribution-Share Alike 2.5 License. In short: you are free to share and make derivative works of the file under the conditions that you appropriately attribute it, and that you distribute it only under a license identical to this one. Official license. ''