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  • "Yosemite: History and Culture." National Park Service. http://www.nps.gov/yose/historyculture/index.htm
  • The Sierra Club. http://www.sierraclub.org/
  • "Sierra Club." Encyclopaedia Britannica. http://search.eb.com/eb/article-9067677
  • "Sierra Club History: Origins and Early Outings." The Sierra Club.http://www.sierraclub.org/history/origins/chapter1.asp
  • Turner, Tom. "Sierra Club: 100 Years of Protecting Nature." Harry N. Abrams, Inc. New York: 1991.
  • "Who was John Muir?" The Sierra Club.http://www.sierraclub.org/john_muir_exhibit/
  • "Yosemite." American Park Network.http://www.americanparknetwork.com/parkinfo/content.asp?catid=68&contenttypeid=10