This might have the caption, "A Renovation Opportunity".
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110816 Chapel Car North Diner Entrance small.jpg [ 136.64 KiB | Viewed 1730 times ]
This is the "kitchen side" of the car because the kitchen stove was on this side. (It's now, and probably forever the northeast side of the car.) You are looking at the opened up bottom half of the doorway that was cut in her when she was a diner sitting on the ground.
The museum staff calls the other side the "Baker side" because the Baker Stove, which was to heat the car was on that side, and was in the now far southwest corner of the car. It may have worked reasonably on eastern coal, but not on western coal. Recall that the car was built by Barney & Smith of Dayton, Ohio. The Baptist parsons, and especially their wives, complained bitterly about the stove's heating ability. Well, at least they surely weren't in hell!