You are out railfanning on the Reading Lackawanna Kensington & Trenton and you catch a local freight rolling past the machine shop. It is lead by an IHC Reading Mikado.
I can see that string of excellent looking freight, with a D&H caboose on one end, and a D&H Challenger on the lead.
If you're ever out to Chicago, bring that with you. I know a club layout where it can run.
Pete