The Sierra Club

Since 1892, the Sierra Club has been working to protect communities, wild places, and the planet itself.
They are the oldest, largest, and most influential grassroots environmental organization in the United States.

John Muir,the founder of the sierra club appears on the back of the California quarter.
John Muir (1838-1914) was America's most famous and influential naturalist and conservationist. He is one of California's most important historical personalities. He has been called "The Father of our National Parks," "Wilderness Prophet," and "Citizen of the Universe."

for more information go to
there is also a chapter in Minnesota: