Picturesque descriptions and sketches by one of America’s most important and influential naturalists describes the author’s 1869 stay in California’s Yosemite River Valley and the Sierra Mountains. Muir’s engaging journal describes majestic vistas, flora and fauna, as well as the region’s other breathtaking natural wonders. The most popular book by the famed conservationist, My First Summer in the Sierra will delight environmentalists and nature lovers alike. 21 black-and-white illustrations.