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| Henry David Thoreau |
| George Catlin |
| Yellowstone National Park |
| Homestead Act 1862 |
| General Mining Act of 1872 |
| Timber and Stone Act of 1878 |
| Federal Land Policy & Management Act of 1976 |
| Rivers and Harbors Act of 1899 |
| George Perkin Marsh |
| John Muir |
| Gifford Pinchot |
| Gifford Pinchot |
| Pinchot-Muir conflict |
| Pinchot-Ballinger Controversy |
| Teddy Roosevelt |
| Teddy Roosevelt, page 2 |
| Roosevelt and Pinchot |
| Roosevelt and Pinchot |
| Teapot Dome Scandal |
| Teapot Dome Scandal – continued 2 |
| Teapot Dome Scandal - continued 3 |
| Teapot Dome Scandal - continued 4 |
| FDR Alphabet Soup |
| Aldo Leopold |
| Aldo Leopold |
| Harrison Brown |
| Rachel Carson |
| Lynn White, part 1 |
| Lynn White, part 2 |
| Garrett Hardin |
| Barry Commoner |
| Paul Ralph Ehrlich |
| Clean Air Act |
| Clean Water Act 1972 |
| Limits to Growth vs. Models of Doom |
| Limits to Growth |
| Models of Doom |
| Club of Rome |
| Turner review |
| Counter Movements |
| Wise-Use Movement |
| Wise-Use 2 |
| Sagebrush, page 1 |
| Sagebrush, page 2 |