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May 28, 1892 – In San Francisco, California, John Muir organizes the Sierra Club.
The Sierra Club is one of the oldest, largest, and most influential grassroots environmental organizations in the United States.[2] It was founded on May 28, 1892, in San Francisco, California, by the Scottish conservationist and preservationist John Muir, who became its first president. The Sierra Club has hundreds of thousands of members in chapters located throughout the United States and is affiliated with Sierra Club Canada.
http://en.wikipedia.org/wiki/Sierra_Club
