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John Muir | Biography, Sierra Club, Racism, National Parks, …
John Muir - Wikipedia
Who Was John Muir? - John Muir National Historic Site (U.S.
John Muir - Quotes, Books & Sierra Club - Biography
John Muir Biography - John Muir Exhibit - Sierra Club
John Muir - U.S. National Park Service
John Muir Timeline - John Muir National Historic Site (U.S.
About John Muir
John Muir | Encyclopedia.com
The Life and Contributions of John Muir - John Muir Exhibit