I was doing a portion of the PRR route through Xenia OH in the 19x15 "den" that was the main reason I bought my current house. I ordered a locally produced history of the railroad booklet, including a town track arrangement, have the 1954 edition of the interlocking diagram, and the employee timetable and rule book. I kit-bashed a PRR specific H class 2-8-0 out of a BLI (DCC/sound) 2-8-2 and an MDC boiler. I even took it to the BLI corporate headquarters to show them how easy a project it could be for them, if I could do it myself. (now they are producing one).
I also have some of their production prototypes that I picked up CHEAP during their "scratchbuilders yardsale", including some of the ones the had to surrender the tooling for due to the MTH lawsuit.
It was operational (but without scenery) with a car card system and I was installing signals, and plannning a second deck and staging, when I realized I'd have a much more realistic run in N (you'd think 19x15 would be enough, right?), so now I'm planning a CSX/Pinsley interchange modeled after whats within 5 miles of my house. Kinda stalled right now since my focus has been cars for while. I tend to ebb and flow between cars, music, trains and computers. At least one of them pays the bills.
I'm assuming the OP has been to the B&O museum.
In 1976 I won the American Freedom train coloring contest in my town.
The prize was a cab ride into the station, and a VIP tour of the train.
That was AWESOME.
I got to the B&O museum about 5 years ago, and was reunited with Reading 2101.
I actually didn't know it was there, and stumbled across it as I was almost ready to leave.
Kinda like seeing an old friend that's seen better days. Somewhere I've got a pic of 8 year old me, with my hand on the throttle, under steam...and now a pic of 40 year old me and the "shell". (tear)