I was driving around Annapolis Junction, Maryland on Saturday 7/6 and snapped a photo of this caboose and another photo of the sign next to the caboose. Peering through the windows, I could see the interior was all intact beautifully with pot belly stove, conductor's desk, and seats. I think it is maintained by the B&O Historical Society. I also snapped a photo of the sign next to the caboose.
The caboose was sitting on some rails ( not connected ) next to the CSX mainline between Baltimore and Washington DC ( the old B&O metropolitan branch ). Enjoy!
Cheers
Patrick Whitehead