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