Carey, Thank you for the information, i find it fascinating! I actually purchased the book on Lionels Fun Factory, read it cover to cover and found it to be an exceptional book. When I read it I sure didn't do a good job retaining the details. At the time I wss more into late 20's and early 30's ingo. I'll definately be expanding my book collection soon...The one thing I remember thinking while reading the book was how very important Mario Caruso was to Mr. Cowen.
I don't believe l have ever seen one of the "knobby" cars in person, also fascinating....i think my book list is getting longer than my train list :-)
Thanks so much guys...