Building S Scale Roadrailers
NASG Dispatch 1983 #4 Fall
Stephen C. Butler
The author describes how he built an S-scale roadrailer following the instructions in an article in the July 1982 Model Railroader magazine. Includes two photos.
Trailer Train's TTAX All-purpose Spine Cars
Railroad Model Craftsman 1991-10
This article describes these cars in great detail. No modeling information is included, but there are lots of photos and many detailed scale drawings, as well as a roster list.
Triple Crown Services (TCS) Part 1
Model Railroading 2005-12
David G. Casdorph
Covers the 48-foot Roadrailers. Lots of close-up photos of the prototype.