List,

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.

http://APPL005.lsu.edu/JNTDR1.nsf/DigRecs/jn000096/$FILE/jn000096.jpg

As for the WABASH box: it's single sheath - is it USRA?

Shawn Beckert