Anyone out there with expertise in the subject of “the Berkshires?” How about “Berkshire county?” Wikipedia has a page for each, which makes sense, I guess, because one refers to an undefined area and the other refers to an area defined in strict cartographic terms.
There is a call for an expert to give attention to the Berkshires page, which presents an accurate summary of the region, but which cites no sources.
The Berkshire county page includes a map and links to all the adjacent counties, plus links to Wikipedia pages for all the towns and cities of Berkshire county.