PDF of information on early gravestone carvers who's work can be found in the Old North Cemetery, Weymouth, MA.
https://docs.google.com/viewer?a=v&pid=sites&srcid=ZGVmYXVsdGRvbWFpbnxud2NlbWV0ZXJ5fGd4OjUzYmU3YWViNjY0NWQxZDU