These links will give you additional information obout the Matsell family and a very nice topo map of the area to use for exploration of the grounds if you care to find some of the other building remains.

Topo Map of the Matsell Area(790KB).

The Matsell Obituary printed in the NY Times.

A Matsell background article printed in the NY Times.

A photo of George Maxwell in his police uniform.

A photo of the foundation that you are looking for.