Natural Rivals: John Muir, Gifford Pinchot, and the Creation of America's Public Lands

Best Climbs Grand Teton National Park: A Guide to the Area's Greatest Climbing Adventures (Best Climbs Series)

Leave It As It Is: A Journey Through Theodore Roosevelt's American Wilderness

Moon Wyoming: With Yellowstone & Grand Teton National Parks: Outdoor Adventures, Glaciers & Hot Springs, Hiking & Skiing (Travel Guide)

The Dayhiker's Guide to the National Parks: 280 Trails, All 63 Parks (Dayhiker's Guides)

Yellowstone National Park: The First 150 Years

Atlas of Yellowstone: Second Edition

Yellowstone National Park: Adventuring with Kids

Frommer's Yellowstone and Grand Teton National Parks (Complete Guide)

Utah Bucket List Adventure,2017 Guide & Journal: Explore 50 Natural Wonders You Must See!