Berkshire County - Chart of name and boundary changes of cities and towns in the county. Covers changes from the mid 1700's to the early 1900's. - http://www.mayflowerfamilies.com/town_names/berkshire_county.htm
The BerkshireWeb Map - Interactive map of towns and cities in the region. - http://www.berkshireweb.com/themap/index.html