Bill McKibben, Henry David Thoreau, George Catlin, Lydia H. Sigourney, Susan Fenimore Cooper, Walt Whitman, George Perkins Marsh, P. T. Barnum, J. Muir, W. H. H. Murray, Frederick Law Olmsted, Jr., J. Sterling Morton, Theodore Roosevelt, Mary Austin, Nathaniel Southgate Shaler, John Burroughs, Gifford Pinchot, William T. Hornaday, Theodore Dreiser, Gene Stratton-Porter, Henry Beston, Benton MacKaye, Robert Marshall, Don Marquis, Caroline A. Henderson, Donald Culross Peattie, Robinson Jeffers, John Steinbeck, Woodie Guthrie, Marjory Stoneman Douglas, Aldo Leopold, Berton Roueché, Edwin Way Teale, Helen Nearing, Scott Nearing, Sigurd F. Olson, E. B. White, Loren C. Eiseley, William O. Douglas, Jane Jacobs, Rachel Carson, Russell Baker, Eliot Porter, Howard Zahniser, Lyndon B. Johnson, Kenneth E. Boulding, Lynn White Jr, Edward Abbey, Paul R. Ehrlich, Garrett Hardin, Philip K. Dick, Colin Fletcher, R. Buckminster Fuller, Stephanie Mills, Gary Snyder, Hayes, Denis, Joseph Lelyveld, Joni Mitchell, Marvin Gaye, John McPhee, Wendell Berry, Annie Dillard, Lewis Thomas · First published 2008
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