I didn’t track this too carefully, but it was noted as being in Marion NC around 1984.  Makes sense, it’s now on some guy’s property about 8 miles south of Spruce Pine, beside an active CSX line at Sevier Crossroads.  Looks to be in pretty good shape.  It’s sited at 35 48 10.89N, 82 00 59.22W on Old Linville Road.  Family Lines System only existed from 1972 to 1982 and this predates that, since it carries a Seaboard Coast Line ID number.  It is, I think, an ACL (Atlantic Coast Lines) M-5.  I could be wrong.  When I was a kid, attracting chiggers on a mountain side in the foggy dawn light while by brother listened for squirrels, I looked over and saw what I thought was a cat and called to it.  My brother: “Hush, Bobby, and, anyway, that’s skunk, not a cat.  Now be quiet!”