Great book
Great book that anyone who plans on kayaking, rafting, or anything on the river, should own. There's the important and simple things that every one should know about what to do in possibly dangerous river situations. There is also a good amount of advanced rescue techniques involving many ropes, pulleys, carabiners, and people so if that's what you're looking for this has it.
Excellent reference for the whitewater enthusiast.
Mssrs. Walbridge and Sundmacher cover the subject of whitewater rescue well. It is geared toward the recreational boater, but is also a valuable tool for the public safety officer (police, sheriff, fire/rescue,SAR, ranger, etc.). It does not cover reading whitewater, since assumes the reader is already a boater of some sort. It does present the most common problems and solutions. In addition it covers use of the tools needed to safely execute timely rescues. Easy reading, excellent photographs and drawings illustrate the points well.