In the wake of the devastating 1906 earthquake and fire, the city of San Francisco desperately needed reliable supplies of water and electricity. Its mayor, James Phelan, pressed for the damming of the Tuolumne River in the newly created Yosemite National Park, setting off a firestorm ofprotest. For the first time in American history, a significant national opposition arose to defend and preserve nature, led by John Muir and the Sierra Club, who sought to protect what they believed was the right of all Americans to experience natural beauty, particularly the magnificent mountainsof the Yosemite region. Yet the defenders of the valley, while opposing the creation of a dam and reservoir, did not intend for it to be maintained as wilderness. Instead they advocated a different kind of development--the building of roads, hotels, and an infrastructure to recreationaltourism...