How the Sierra Club Works

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  • "Yosemite: History and Culture." National Park Service.
  • The Sierra Club.
  • "Sierra Club." Encyclopaedia Britannica.
  • "Sierra Club History: Origins and Early Outings." The Sierra Club.
  • Turner, Tom. "Sierra Club: 100 Years of Protecting Nature." Harry N. Abrams, Inc. New York: 1991.
  • "Who was John Muir?" The Sierra Club.
  • "Yosemite." American Park Network.