I went to both locations this weekend. With the one that I think is either the NYH&N or one of the other failed projects (was any grading ever done on the Danbury & Port Chester?), the most visible part of the grade has been obliterated by an enormous McMansion w/in the last 11 months or so. However, you can still see it if you look closely, near Cobbler's Lane. It comes in at about a 45 degree angle to 35, along the side of the Mill River valley. You can see more of it if you turn off 35 onto Golf Lane; the driveway of 117 Golf Lane is almost certainly the old grade (way too engineered for a regular driveway, and it comes into the road at a really weird angle). I marked out what I think are traces on the topo map (link at the bottom).
Up in Ridgebury, I'm almost sure that what I found is the D&HT. I first followed the ROW along George Washington Highway. You can clearly see the remains of bridge abutments just to the north of the road where it crosses Miry Brook. I then followed the length of Old Trolley Road (which I'd never been on) and found it oddly straight for a subdivision road; it also follows the contours of the hill, looping first north, then west, then finally southwest toward the center of Ridgebury. Finally, I found the well-preserved remains of a culvert or small bridge, parallel to Ridgebury Road, just about across from the cemetery. The old ROW at that point seems to merge into the roadbed of Ridgebury Road, heading toward the church-- I looked, but I couldn't find any indication of the ROW crossing or exiting on the other side of the road. I got some pictures of this, will post them as soon as I can figure out how to do so.
http://mapper.acme.com/?ll=41.26678,-73 ... field%20CT