I'm doing a lot of research on CB&Q freight cars and I've come into a roadblock of sorts. I've noticed that the CB&Q designates car series with a car class. The tough part is that, unlike the Pennsy, NYC and the NC&StL, they don't put the class name on the car exterior.

For example, I have a picture of CB&Q #44499 which is an single sheathed automobile box car. Thanks to the article on CB&Q wood automobile cars in a RPC issue, I know that it is a class XA-6 car. But when looking at the picture of the car there isn't any place that has it stenciled "XA-6".

So, does anyone know where I can find a good classification and freight car roster for CB&Q cars?

Thanks.
Steve Hedlund