Martin,

Go to the local college andsee if they have an Ag and/or Forestry program. Offer to have the students come and identify the trees, attempt to determine health, and make recommendations on "thinning".

I would get a hold of the Penn Dutch in the area and pick there brains. You may allow them access to the wood. When I was stationed at McGuire AFB a few years ago there were tons of Amish/Penn Dutch furniture makers around. That is of course depending on where you are in Bucks County.

As a side note: I was part of a theater company in Morrisville, PA right by the Calhoun Street bridge.