Rocky Mountain TCA Yule Marble 15 Wheel Flat Cars

Hello,

What would you like to know about the car?
There are still some available (I believe)  through the Colorado Model Railroad Museum

Sincerely,
John Gardberg
Rocky Mountain Division - TCA

Here is some of the original artwork from when the cars where first advertised.

15 wheel? Will the cost-cutting never end?

I thought l and a friend, who have visited Marble, Colorado, had got in eight wheel flats with a piece of marble on them as convention cars from TTOS?  I have them packed away so don't remember, but don't remember them as 16 wheel flats, or were there two groups from two different clubs?