However what is interesting is that they converted several RDC-2s into dining cars such as this one by adding a couple of windows and a kitchen in the baggage section. Many images of this car type on line.
The C&O gets a little more interesting. No references to a Chessie logo but their 2 RDC-1s and an RDC-2 car were run as a train called the Chessieliner. They had the faces painted orange (or aluminum) with a white (or yellow) stripe wing pattern under the windows.
I would think either would be an interesting project for a Chessie fan.
While the B&O image is nice, it's really not very representative of the WP units. They had the gyralight, roof mounted number boards, and an extra window for the added women's bathroom as the more obvious differences.
There are a number of images, B&W and color, of the Chessieliner in the C&O archives: archives.cohs.org/