I've been trying to find more info on these heavyweight cars by GGD but it's proven to be a tough manufacturer to research. While evaluating my choices for heavyweight 20th Century Limited sets I stumbled across this archived Stout Auctions listing:
http://www.liveauctioneers.com...passenger-train-cars
Wasn't able to find any further info or photos beyond this listing. Since all the cars are lettered for the NYC I'm assuming these were not produced as a 20th Century Limited (most should be lettered for Pullman in that train), so am curious as to which train exactly GGD was going for with these cars. Anymore photos or info would be greatly appreciated.