@Jim 1939 posted:
The first one's were good copies of Lionel's Madison cars but be aware that they also came with none operating couplers. I would avoid those.
Another problem with the original Madison cars was the connector to the pick up roller would short against the axles, I had to use heat shrink tubing to insulate them. I let all except one set of my Williams Madison's go in favor of the 60 foot Railking cars which look better behind a scale locomotive.