Working closely with Muir's family and with his papers, Linnie Marsh Wolfe was able to create a full portrait of her subject, not only as America's firebrand conservationist and founder of the national park system, but also as husband, father, and friend. All readers who have admired Muir's ruggedly individualistic lifestyle, and those who wish a greater appreciation for the history of environmental preservation in America, will be enthralled and enlightened by this splendid biography.