When I was discussing the issue of the burial ground with the NY Times reporter, I really wished that I had a map, historical or otherwise, that indicated the existence of the Kingsbridge burial ground–just to prove, beyond the shadow of a doubt, that it had been there. Well, it’s a little late but I did find such a map. It’s the USGS USA topo map:
Note the “Cem” indicating a cemetery at both the Kingsbridge Burial Ground to the east of the Van Cortlandt Mansion House and the Van Cortlandt burial vault to the north.