B&M heavyweight steel coach cars

Does any one know where I could find a good side picture of the six wheel coach cars the B&M purchased fron C&O? The B&M numbers were 4620-4628. I have been able to find a good picture of the diner Massachusetts, but have had no luck in finding any good side shots of the coaches.

Thanks for any help.
Mark

I don't know about square-on roster shots, but several photos in RW Jones' books show one in a consist. IIRC he also has a shot of a coach and combine in the "passenger car roster" appendix to (I think) B&M - Forest & Mountain.

Thanks for the info. I will look for that book on ebay.