Actually the Museum owns both the sawmill set-up at Sheepscot Mills, and the partial sawmill equipment at AC. Brian asked us if he could set it up and use it to saw the logs to build the house. Unfortunately (for sawmill fans) it ended up being cheaper to buy the lumber than cut it off the land and saw it there.
A sawmill would certainly be a good addition, as we could saw out our own lumber for cars, boards, and other timbers. Maybe even ties, but that would also require a tie treatment plant online!