Thank you Art for submitting information about this significant tool in researching ancestral geography in support of genealogical research.

The Nationwide Migration & More link works as an excellent companion for me with the use of Access Genealogy.com: A Free Genealogy Resource.
http://www.accessgenealogy.com/

Great suggestion Alt for researchers to get intimate with maps in particular and get acquainted with the fundamentals of geography.

I love how resourceful the Digital-Topo-Maps.com website is as well.

http://www.digital-topo-maps.com/county-map/

Happy Hunting.
Ingrid