Ranger's Guide to Yellowstone Day Hikes 20th editionA Rangers Guide is a notable departure from your typical hiking book. It has the best of everythingthe most accurate information, the highest quality maps, and outstanding photography. But what takes it over the top are the Naturalist Notes for each hike. With this book as your companion, it's like having a ranger as your guide on every trail. With over 40 years of combined experience as park rangers in Yellowstone, Roger Anderson and Carol Shively