Just out of curiousity....does anyone know the answer to this? What allows a model railroading company to reproduce trademarked symbols and material without being in violation of copyright and other laws? For example....you can buy billboards and signs of real companies...Coca Cola, Greyhound, Texaco, Chevrolet, etc. I can't imagine that the companies that produce these accessories are actually getting permission for these reproductions. OR..does this somehow fall under fair use? Does the same apply for RR heralds? I mean...in theory, a herald could still be a validly held trademark.