Matthew B. Gilmore
Now accessible from home.
USE the manual:
It is a very difficult and intimidating system to navigate–you need your square and lot–so you should know the whole history of your property lot numbering changes before you begin–consult the Baist atlases.
It includes many maps, many types of maps–it is very difficult for any non-expert to know which is the appropriate one (often you need the most recent).