Tom,
That is one book I haven't picked up yet, but have been meaning too. I'm always looking for more resources! My library has grown a lot since then. The quality of people of the forum pushes me to do further research and know things just a little bit better. I've also built up a library of documents from the O&W to help in research and in hopes that one day I can run a fairly prototypical model RR. I wish I had been born a little earlier so that both memorabilia and paperwork would be a little easier to find!
I've also found along the way... seeing as this thread is a couple years old and I haven't made much progress... that I'm a stickler for details. After the O-scale structures, I started working on some HO O&W hopper kits, and stopped when I realized the brake components are all wrong and some kit-bashing will be needed!
Which book did they publish that you wrote?