Dean King, in his new book, Guardians of the Valley, shares the origin story  of John Muir, which equally involves his editor Robert Underwood Johnson.  Through a powerful personal relationship Muir and Johnson combined Muir’s vision of nature, his elegant writing and Johnson’s penchant for action. Together they got people to come journey to the wilderness, founded the Sierra Club and saved Yosemite. All with a humanity that got people to appreciate nature, more than just preserving it.