I was less than ten years old when I lived there; my parents drove me places; didn't know you had to know the names of streets to get there. On Google maps, go to (Catholic) St. Joseph's Shrine on Long Hill Road, N.J. I don't know if Gillette (below) is the nearest town or Millington is? From the Shrine, on Long Hill Road, head (if wrong, then the opposite direction) seemingly east or towards NYC (the direction he train goes to get to Summit/NYC). At the first intersection, turn left, on the left, before the road bends right, the old entrance to the van Dyne (however spelt) farm, I think was there. For some reason I think his daughter's name was Helen? If you don't find it, I'll go to Google Maps and get that turn-off road's correct name. Alternatively, in Google Maps, from Long Hill Road, go up to the Shrine and slightly beyond, then right less than a quarter mile (this is off road) and in there was the farm.