"John Muir Biography-John Muir Exhibit." Sierra Club Home Page: Explore, Enjoy and Protect the Planet. Web. 24 Jan. 2012. <http://www.sierraclub.org/john_muir_exhibit/life/muir_biography.aspx>.
"John Muir National Historic Site (U.S. National Park Service)." U.S. National Park Service - Experience Your America. Web. 24 Jan. 2012. <http://www.nps.gov/jomu/index.htm>.
"John Muir Writings - Books and Articles by John Muir." Yosemite Online. Web. 24 Jan. 2012. .
ReplyDelete