Terry and Wendy Gunn recently published the bible of national parks fly fishing with the Stonefly Press. The heavily photo-studded and text rich book shares in great detail some of the best fishing our national parks across the country have to offer. Each chapter is written by local guides, fly shop owners or fishermen who live in and fish the area extensively. If you’re planning a road trip or destination park trip this is a must read. The Yellowstone section is comprised of 4 separate chapters to cover the full breadth of the park. Be sure to check out the North Cascades National Park chapter. You may see a familiar face in the credits. 25 Best National Parks to Fly Fish retails for $32.95 and is available at the Confluence Fly Shop.