Divided by region, each tailwater (actual number is 56! yay!) has a great map and the write-up is the work of a local guide, so you can be sure that the knowledge is sound. (Although I know attaining true G14-Classified Super Secret guide insight still entails multiple 30-packs and a sustained proven trust level higher than the standard boat fare, and even then if they are true to their craft you will only get a partial idea, and that is just the way it goes and the way it should be.) Each chapter also includes "contact information for local fly shops, outfitters, and lodges, along with suggested best bars, restaurants, hotels, campgrounds, and emergency medical services." But seriously- the maps...bacon-savers.
The Gunns are good people. I am always treated like family when I stay at their lodge up at the Ferry. This, truly, is a very nice book with lots of good knowledge that can be used on all waters, really. It would look damn good on a coffee table, too. I was given a copy in exchange for talking about it here, but I think we have known each other long enough for you to understand that I would never lead you astray for personal gain. Probably. I think. Either way, if you buy this book and feel like anything I have said here is bullshit, drop me a line and we can talk about how you need a hobby.