Many books have been written about Yellowstone Park's spectacular fly water, but never with the detail found in Retallic's new guidebook. Everything anglers need to know about major fisheries like the Firehole, Yellowstone, and Lamar Rivers, Slough Creek and Yellowstone Lake is included along with great information on lesser-fished waters in the Park's backcountry. Ken Retallic- Paperback- large guidebook