John Muir was one of the creators of the United States national park system and protected nature reserves. His love of nature and activism preserved the Yosemite Valley, Sequoia National Park, and other wilderness areas for generations. He wrote prolifically on man's duty to care for the environment. His works continue to inspire ordinary people as well as presidents and politicians to love nature and to strive to protect it. Contents: Our National Parks, Stickeen, My First Summer in the Sierra, The Yosemite, Travels in Alaska, A Thousand-Mile Walk to the Gulf, The Mountains of California, Steep Trails, The Grand Cañon of the Colorado, The Story of My Boyhood and Youth.