Atlas of the Historical Geography of the United States
The Atlas of the Historical Geography of the United States was originally published in 1932 and was recently digitized and made available online by the Digital Scholarship Lab at The University of Richmond.
There is an amazing array of historical info here.
- Railroad expansion
- Native American History
- Politics thru the years
- Territorial Claims
- U.S. Military History
- ... you name it!
The Table of Contets is nicely organized and easily navigable