Brian, I will be in Woodstock, NH and enjoying an early Spring week in late April. My sons' condo is right on the Pemmi, soooo relaxing, especially with a single barrel Bourbon, neat. That's the going rate for babysitting services while he's in Jaimaca looking for the sun and surf.
When i'm out and about in-town for breakfast and such, i'll inquire of the locals. Where an original mill once stood is now the location for several touristy shops and restaurants, rooms, etc. There is also several interesting and informative pictures and placards concerning the mill located in the public areas of that building. I'll also stop in the local bookstore/library and inquire within.
The project looks to be monumental but it's a magnificent structure to build an engrossing scene(s) around. Good luck to you and Jim.