New Orleans Public Belt, Circa ?
You might enjoy this shot of the NOPB Rwy sometime
in the 1920's-1930's. The URL will most likely wrap
around, but it's worth typing out. Other than the
Wabash car in the foreground (honest!), the only
car I can tentatively identify is a Milwaukee box -
I think - beyond the switcher.
As for the WABASH box: it's single sheath - is it USRA?