Thank you all!
John... the library is pretty much across the street from Lawrence Academy, though you have to hunt a bit for the parking lot. It's behind the building, and only accessible from Broadmeadow Road, and Playground Road.
Jose... it would be great if you can come over to Groton from Northampton... it's probably an hour and a half or two hour drive, so you'll need to plan for an afternoon, at least!!