John Muir’s beloved adventure in the Sierra reissued to entertain, encourage, and inspire contemporary naturalists.Considered one of the patron saints of twentieth-century environmental activity, John Muir's appeal to modern readers is that he not only explored the American West but also fought for its preservation. My First Summer in the Sierra is Muir’s account of his adventures and observations while working as a shepherd in the Yosemite Valley, which later became Yosemite National Park as a direct result of Muir’s writings and activism. Muir’s heartfelt and often humorous descriptions of his first summer spent in the Sierra will captivate and inspire long-time fans and novice naturalists alike.