Another, more detailed list of AAR designations


leedennegar
 

Here's a long and detailed complilation or ARA/AAR freight car type
codes and how they changed over time.

http://www.nakina.net/aartype.html

After April, 1938 "TW" meant one or more wooden tanks. Before that
date, it doesn't say how many tanks there may be, but it/they are
definitely wooden and intended for pickles.


Lee Dennegar
CNJ on one side, LV and RDG on the other.

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