After browsing through the ENTS site tonight, I was reminded of an
Eastern Hemlock that is located in our NJ Pine Barrens. They are not
native here, and this particular tree is the only one I know of. It is
located in the ghost town of Weymouth Furnace. Part of the ghost town
is in a small preserve called the John's Woods Preserve. This is a New
Jersey Natural Lands Trust preserve. The area where the Hemlock is
located was part of the grounds of the Colwell mansion, from back in
the days when the village was still a village. I'm not sure if the
tree is from the iron furnace days (pre-1840s), or the paper mill days
(1860s and later). At any rate it's a pretty good sized tree, not
ancient of course, but big. I think that it would be a good idea for
someone from the ENTS to come and inspect the tree, maybe climb it,
and maybe measure it. From ground level I can't tell if there's any
HWA on it. Fortunately the tree is reproducing. I'm also curious about
its size and age. It is in pretty deep forest too.

Here is the NJNLT's website: http://nj.gov/dep/njnlt/index.htm
I can hike in their preserves at any time. But I have no idea if
climbing or measuring a tree would require permission.
As for the Elm, it too is in a ghost town. It's in a ghost town called
Friendship. It's easy to find. It's either in the northernmost area of
Wharton State Forest, or just north of it, in Burlington County.
Friendship was a cranberry farming community before it died out. Its
heyday was either in the late 19th century or the early 20th. I'm not
sure which. The Elm tree is in an open field, in plain sight, and
appears to be healthy. It may be 100 years old. I don't know. In Egg
Harbor City there were two of them, in the front yard of a house on US
30, but those trees died 2 or 3 years ago. The one at Friendship,
fortunately, is doing fine.
Take care,
Barry