Good Evening,
If you are a fan and/or modeler of modern short line railroading, I would check out "A Year On the Lycoming Valley" by Mike Zollitsch. I've been eyeballing this one for awhile, and I finally found a copy of it used. This book is awesome because it really shows what had gone on for over a year on the Lycoming Valley. The author is a railroader, and the pictures give an interesting perspective of some of the many yard and turn jobs. Some of the shots of the industrial trackage have given me some ideas of what to do down the line with my layout. If you search for the title online, there is an interview of the author that talks about the book.
Thanks,
Adam