A biography of John Muir, naturalist and founder of the Sierra Club, whose travels, speeches and writings led directly to the creation of the Yosemite National Park in 1890 and other national parks that followed.

"When the magic tree house whisks Jack and Annie back in time, they land in the tallest tree in Yosemite, California where they join nature conservationist, John Muir, and US President Teddy Roosevelt on a historic trip through the woods"--

"In June of 1889 in San Francisco, John Muir-iconic environmentalist, writer, and philosopher-meets face-to-face for the first time with his longtime editor Robert Underwood Johnson, an elegant and influential figure at The Century magazine. Before long, the pair, opposites in many ways, decide to venture to Yosemite Valley, the magnificent site where twenty years earlier, Muir experienced a personal and spiritual awakening that would set the course...