Fruit Rancher, Family Man, Writer...Father of the National Park Service!

John Muir played many roles in his life, all of which helped him succeed in his role as an advocate for Nature. As America's most famous naturalist and conservationist, Muir fought to protect the wild places he loved, places we can still visit today. Muir's writings convinced the U.S. government to protect Yosemite, Sequoia, Grand Canyon and Mt. Rainier as national parks.

...Excerpt from NPS website