I pay attention to mostly western US railroads, particularly UP and ATSF, so I'm not up to speed on the NYC. I figure someone here is an expert.
What locomotive was prototypical on the 20th Century Limited with the green pullman heavyweight cars shown on pages 88-89 of the new Lionel 2012 Signature catalog? Did a non-streamlined Hudson (e.g., a Vision Hudson) pull these? Weren't these heavyweights run earlier than the streamlined Dreyfus?