NATIONAL GEOGRAPHIC'S GUIDE TO THE NATIONAL PARKS - Expert travel writers give their personal recommendations on what to see, when to go, and how to organize your visit when touring the nation's 54 national parks. Vivid full-color photographs capture the feeling of each park while detailed maps lead you to and around the parks, pointing out major sights, trails,and campgrounds. Features advice on activities and lodgings, itineraries, and sight-by-sight tours.