We've discussed these cars before. The owner had grand plans of building his own railroad. I was there in 1989 or 90, the cars were sitting there rotting away. I found this note in my files, but can't recall who sent it to me.
Years ago, a friend gave me alist of the car types, but could make out only 1 no, from the highway that was the 5530. A box car had the last two digits of its no. as xx50. In total there were:3 idler flats, 2 hiside gons, 1 box, 7 stock and 1 drop bottom.
One car was sold some time back, but I don't remember which one. The owner is getting up in years, and if someone came along with an offer on the collection I think he would let them go.