I saw these signs on someone else's blog a couple of weeks ago, and made a note to visit them myself. But, I've since forgotten who's blog it was, so, I can't give them props. Sorry.
On Ludlow, across from the District Police HQ, there's a little road, Streng, which dumps into a little enclave of industrial buildings, and a couple of abandoned houses. I kind of knew something was back there because of the Worthmore chimney, but didn't explore on my own until seeing this blog, which I've forgotten.
While you may think it's Clifton, my mapbook and the County say it's Camp Washington.