Even mended with tape (not my doing), this is a fine picture, taken by the American Car and Foundry Company in 1923. Brand new car for Southern Railway.
I would guess that this is the crew that guarded and processed the mail on the car, getting ready to load up. That’s a lot of security!
Railway post offices were mostly gone by 1962 and completely gone by 1977.
Blogging the Railroad Tunnels 