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George Perkins Marsh
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activist Adirondacks Aldo Leopold American Forests Appalachian Trail Audubon became Benton MacKaye Boston buffalo campaign career Carl Schurz Chapter Charles Scribner's Sons cities civilization Club Commoner's Congress conservation movement conservationists country's create David Brower Despite early Eastern ecological economic editor energy England enthusiasm environmental exploitation father federal Forest and Stream Forest Service Forestry Franklin Frederick Law Olmsted friends future George Bird Grinnell George Perkins Marsh Gifford Pinchot heritage Hornaday Hornaday's Houghton Mifflin Howard Zahniser hunting ideals industry John Burroughs land later leaders Living Wilderness lobbying Lovins MacKaye's Magazine Marshall's Mountains national forests National Park nature ness nuclear Olmsted's pesticide planning political preservation President programs Rachel Carson Ralph Nader reform Robert Marshall scientific scientist Sierra Silent Spring Teddy Roosevelt Theodore Roosevelt timber tion took turned University Press vationists Vermont vision Washington West wild wildlife writing Yellowstone York young