The Perry-Castañeda Library Map Collection
The Perry-Castañeda Library Map Collection at the University of Texas at Austin holds more than 230,000 maps, many of which have been scanned and made available at this site. This extensive online collection includes hundreds of high quality, copyright-free maps of nations and cities, as well as many historical maps. A special “Electronic Maps of Current Interest” section highlights maps of places in the news. This site also hosts a variety of links to other map-related sites.
http://www.lib.utexas.edu/Libs/PCL/Map_collection/Map_collection.html
Taming the Wilderness: Rivers, Roads, Canals, and Railroads
This page is part of the Conner Prairie Web site, a living history museum in Fishers, Indiana, that highlights 19th-century pioneer life in Indiana. The site explores the modes of transportation used by the settlers of the American frontier, including flatboats, steamboats, the National Road, canals, railroads, and more.
http://www.connerprairie.org/historyonline/taming2.html