A Scottish-American naturalist, author, and early advocate of wilderness preservation, infamous for his nature writings in the Sierra Nevada and petitioning the U.S. Congress for the establishment of both Yosemite and Sequoia National Park.

"John Muir was a Scottish-American naturalist, author, and early advocate of preservation of wilderness in the United States. His letters, essays, and books telling of his adventures in nature, especially in the Sierra Nevada mountains of California, have been read by millions. His activism helped to preserve the Yosemite Valley, Sequoia National Park and other wilderness areas. The Sierra Club, which he founded, is now one of the most important conservation organizations in the United States. One of the best-known hiking trails in the U.S., the 211-mile (340 km) John Muir Trail, was named in his honor. Today, he is referred to as the "Father of the National Parks."