University of Texas at Austin
Perry Castaneda Library Map Collection: Tennessee Maps
A listing of online historical and current maps for the State of Tennessee. Part of the Perry-Castaneda Library Map Collection.
Other
Maps of the American Revolution
Although this is a "selling" site, it is a good resource that not only supplies images of maps of the times, but provides the background to the map - when it was published, what was going on at the time, etc.