Something I learned this week from the MSTL Yahoo group is that if you're so inclined, you may want to try and confirm with a photo that a trailer was actually used in TOFC service.
This was brought about buy this Athearn car.
A totally prototypical M&STL trailer scheme but not used for TOFC.
It was for LCL freight in MN.
Model Railroading is Fun!
Jason