John Muir was a Scottish-American naturalist, author, and early advocate of preservation of wilderness in the United States. His activism helped to preserve Yosemite Valley, Sequoia National Park and other wilderness areas. The Sierra Club, which he founded, is still active today. The John Muir Trail is a 211-mile hiking trail in the Sierra Nevada.

Now readers can explore how his childhood influenced his life.

Montrew Dunham