John Muir's Last Journey: South to the Amazon and East to Africa - Unpublished Journals and Selected Correspondence (Pioneers of Conservation)
Washington, D. C. Island Press, 2001. Hardcover. Though best known for his conservation efforts in California and his creation of the Sierra Club, Muir considered his final journey the most rewarding, writing while in Africa in 1912 that "on this pair of wild hot continents I've enjoyed the most fruitful.....