The American Wilderness: A History of Its Preservation

1st sess 2nd sess 63rd Cong Adirondack wilderness Adventures aesthetic Aldo Leopold American thought American wilderness argument August bill Boston canyons century civilization Colorado River Colorado River Storage Committee on Interior Congress Congressional Record December declared defended Dinosaur National Monument early Echo Park controversy Echo Park Dam frontier George Perkins Marsh Hammond Henry Hetch Hetchy controversy Hetch Hetchy Valley History human Ibid idea of wilderness important Indian Insular Affairs Interior and Insular John Muir Journal Living Wilderness Magazine man's Marsh Muir's National Park System ness Olson pioneer preservation of wilderness preservationists primitive Puritan recreational region reservoir River Storage Project Robert Underwood Johnson Rocky Mountains San Francisco Sand County Almanac scenery Senate Sierra Club Society Thoreau tion United value of wilderness vote Washington West Western wild country wilderness areas wilderness ideology wilderness preservation William Yellowstone National Park York Yosemite National Park Yosemite Valley