Watch The National Parks: America's Best Idea | Ken Burns | PBS - discu.eu

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The National Parks: America s Best Idea http://www.pbs.org/nationalparks/ 6 comments 27/9/2009

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The Odd History of Opposition to America's National Parks - Pacific Standard http://www.psmag.com/nature-and-technology/the-odd-history-of-opposition-to-americas-national-parks 41 comments

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