Down the Great Unknown: John Wesley Powell's 1869 Journey of Discovery and Tragedy Through the Grand Canyon

The Emerald Mile: The Epic Story of the Fastest Ride in History Through the Heart of the Grand Canyon

The Emerald Mile: The Epic Story of the Fastest Ride in History Through the Heart of the Grand Canyon

The Exploration of the Colorado River and Its Canyons (Penguin Classics)

The Grand Canyon Expedition: The Exploration of the Colorado River and Its Canyons

Carving Grand Canyon: Evidence, Theories, and Mystery, Second Edition

The Grand Canyon: Between River and Rim

Beyond the Hundredth Meridian: John Wesley Powell and the Second Opening of the West

The Promise of the Grand Canyon: John Wesley Powell's Perilous Journey and His Vision for the American West

The Exploration of the Colorado River and Its Canyons

Cadillac Desert: The American West and Its Disappearing Water, Revised Edition