I can vouch for the fact that there are some great little homebrew pubs in New England, which serve English-type ale. And the fall is rather spectacular! I seem to recall a wonderfully-tasting porter in a little pub somewhere in Vermont (once it had been allowed to warm up a bit!). I was there on a morris tour with the Chameleonic Morris Men in 1999 and the local morris sides (and folkies generally) were very hospitable. We had a great time and were there for 10 days - you would need to plan for at least a week I think.

Ale, ale glorious ale, served up in pewter it tells its own tale!"
Alan