Incoming Resources
- Aldo Leopold, a fierce green fire, by Marybeth Lorbiecki
- John Muir, nature's visionary, by Gretel Ehrlich
- John Muir, apostle of nature, by Thurman Wilkins
- John Muir, crusader for the wilderness, Karen Clemens Warrick
- The young John Muir, an environmental biography, Steven J. Holmes