Did the UP have more than one common double sheathed box car or smaller steel box car after WWII?
I am familiar with the double sheathed car with corrugated ends and an end door ofered by Westerfield and the rebuilt steel car which Ted profiled in MRC.
From a '43 freight car register (the one available from the NMRA) it looks like there may have been additional cars in at least one of these catagories.
I see UP have several groups of standard 10'IH box cars with slightly different capacities. Did they vary from the standard cars in any way?
