Awesome photo! The most interesting (non-RR) thing about that caboose is that it has a vintage Kid "PK" tag on it. Kid PK were huge in the late 1990s and early 2000s. Nobody ever verified the identity of him/them (could have been two kids). If you want to go down an internet rabbit hole google "what ever happened to Kid PK graffiti artists." They were the NJ version of Banksy. Some say one of them died or went to jail but no one really knows for sure. Keep your eyes open. If you look closely, you'll see "PK" or "PK Kid" all over New Jersey, including railroad bridges and infrastructure.