10 years ago, Tom Snyder compiled the first modern guide to driving Route 66. For this third edition, Snyder has thoughtfully separated the driving directions ("Traveler's Guide") from his trove of 66-related anecdotes ("Roadside Companion"), making the book more useful. The guide's most distinctive features are reproductions of period maps from the Automobile Club of Southern California, over which the route of the modern Interstate has been superimposed.
Snyder's book is a fun read and quite helpful for planning a Route 66 drive. But once you're on the road, BY FAR the most useful navigational aid is Bob Moore and Patrick Grauwels' *The Illustrated Guidebook to the Mother Road*, which unlike Snyder's book provides turn-by-turn directions and mileage.