PC: PC Coaches

[David Fiore <dfiore@xxxxxxxxxxxxxxx>]

Does anyone know of the different manufacturers who produce Penn Central 
Coaches, Sleepers, etc.  And which types of coaches they produce.
I know there were several different types, i.e., smoothside -green, 
corrugated - silver, or corrugated with green stripe.  Its getting harder 
to find any coach models in N or HO Scale.

Thanks