There are a number of groups that cover genealogical research in each of the states, sometimes even every county.
Unfortunately there is too little coopertion between them. This is an effort to bridge the gaps and help you find
additional material in places you might not have thought to look.
American Local History Network
On-Line Historical and Genealogical Socities Resources
Rootsweb Mailing List Archives
United States Genealogical Network, Inc.
American History and Genealogy Project