I spent a feew weeks in Mercer Co. over the past several years. Linn's book is recommended by everybody including the local funeral homes. I did not talk with the trustees of the Princeton Cem. I was able to locate my greatgrandfathers grave, but it too is poorloy marked as the stone is worn to the extent that I will need to have the government repair or replace it. Good luck and what were the mames you are looking for? Thanks, Chuck