I just received the book " History of Old Dunstable" compiled by Charles Fox. The book has each of the surnames listed by Bob. However, it covers a time period slightly before Bob's ancestors. I agree with Nancy that you would find a request to the records clerk of Nashua and sorrounding towns to be very fruitful. Also look for published histories of the specific towns in that area. Dunstable was a township that split into 4-5 individual towns. Keep on keeping on Colin B.