Steve P's book will give you a brief overview of each river on the peninsula. There is a map of each river pinpointing the various put in and take outs along the systems and who to contact in the area that could give you more info. He goes into more detail on his favorite rivers, Queets and Hoh, than on the others. In addition adds insght into effective techniques to use, flies, tackle, and species encountered at what time of the year. Like I mentioned, not a super detailed work on each river, but an insightfull overview hitting all rivers.

Check out his Hoh River Journal for a comprehensive guide to that river. Includes some beautifull photography and tons of pertinent info.