Hey Chip...
Yep, got that guidebook, and ones from the 40's to now as well... If you get the chance, read Earl Schaffer's autobiography 'Walking with Spring', he talks briefly about that section when he hiked it in 1948.
And yes, the old AT is pretty much what is considered the Mohawk Trail, and like Chip said, if you are near Dudleytown and look like a hiker instead of the local goth kid/metalhead/jock looking to party; i.e. almost any younger looking person that may not be a hiker, most likely the neighbors will not bother with you. BUT the only real access will be via the Mohawk Trail. Don't drive up to the Dudleytown area and park on the local streets. That will cause you grief, not by evil spirits, but the neighbors who don't want the hassles of living near an allegedly haunted town. And you will really want to avoid the place anywhere near the end of Oct near Halloween. The neighbors get really upset because some paper will write a story about the place and attract the latest ghosthunter or partier...
Reading the old AT guides actually is pretty interesting, I have over a half dozen from the 1940's to current for the NJ to MA section of the trail. Most of the old trail used lots of roads until the NPS bought property, and a few of the old shelters are still out there. There is an old stone one east of the Taconic near Black Pond that is on private property, new owners not keen on visitors, and just letting the stone shelter fade into memory and the landscape from what I know. In some areas there are still blazes visible, of course well faded and almost gone, but if you look they are there.
You can access some vintage topo maps on the web as well that has the trail marked on them. I use them to find old railbeds too... If I had the skill and time, I would love to create a map that shows the current AT, and the trail as it has been re-routed over the years. I would not be surprised if someone already has done that, I just have never found it.
As for Giant's Thumb, it is allegedly a glacial erratic... Honestly I believe that it was a prank done by some native Americans in the area to laugh at some colonists...
![Big grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
I'M KIDDING OF COURSE
![Big grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
... Actually it is a pretty cool rock to check out, plus it is right near one of my favorite spots to view the Southern Taconics, Rand View; a great view looking NW at the Riga Plateau north to Everett and beyond.
Catch you all later...
Kevin