Well, your question prompted me to go looking. The simple answers taken from the comments and knowledge of others, is that the 'Madison' car was just a name given to a line of Heavyweights that Lionel produced, named after towns around their plant. So, MTH is modeling a Lionel model of a car that did not really exist, so MTH or anybody could create anything they wanted. I guess you would have to research the real cars in the heavyweight category to find something close. I wondered about that rear door, half of which is covered by the herald, but did they have split doors, like a bifold on those cars, if in fact that is what is being represented? Have to add in that I have many of Lionel's 'Madison' style cars, some complete sets, actually more of them than the more accurate heavyweights, and the Lionels run well and look good,