Conundrum on the Eastern Shore

Many thanks to Jack Rzepecki, who has sent along some photos that shed light on one (actually, two) of my longstanding mystery cars. The cars in question comprise a pair of Reading MU cars that for many years have been sitting on a siding on the edge of picturesque Chestertown, Maryland, on the state's Eastern Shore. These two appear to have been part of the Reading MU fleet that went to a motel in Wilkes-Barre, where the cars were divided by a wall in the center of the car into two motel rooms per car. I've seen details like the A/C units cut into the car sides, room numbers inserted into the headlight number boards, and gacky medium-green paint before, when I stumbled across car 805 from this collection back in 2000 (that car has since been cut up). I'm not certain, but I believe all of the MU cars that went to Wilkes-Barre were unrebuilt 800-series cars retired in the late 1970s and were never renumbered in the 9000 series.

The problem: Back in 2000, I was able to find car 805's number under the green paint on the side of the car. But the cars in Chestertown look to have been stripped or sandblasted at some point; no car numbers were visible on the exterior. Anyone happen to know where else on a Reading MU car a number might be found - perhaps over the window inside the cab or something? Any recommendations are appreciated! I wouldn't mind adding these cars to the PNAERC list, but I'd like to be able to ID them first.

Anyway, the more interesting of the two cars in Chestertown is the south car, parked between a caboose and the north MU car. I believe this is the only survivor of a small group of motor cars that the Reading ordered for use as motor-trailer pairs. Most of the RDG MU fleet consisted of two-motor cars, but there were a handful of these pairs. These cars had Commonwealth trucks, unlike the weird Taylor trucks on the rest of the MU fleet, and had four motors. They were also single-ended, not double-ended, since they were evidently designed to be semi-permanently coupled to a trailer. I think I had a copy of a RDG MU roster at one point but I haven't been able to locate it.

I believe the entire RDG MU fleet had WH AB control, with these XM37 "elevator" style controllers, and AMUE brakes.

The northern car, shown in the next five photos, is a typical two-motor, double-ended car from the 800-series.

Jack even took this great video as a walkaround of the cars!

So, to summarize, any information that might help us ID these two on a future visit is appreciated. And a huge thank you to Jack for the investigating!