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WikiPedia: Old Man of the Lake http://www.panoramio.com/photo_explorer#view=photo... http://www.pbase.com/image/33010525 http://allkindsofhistory.wordpress.com/2011/05/09/... http://media.barometer.orst.edu/media/storage/pape... http://www.nps.gov/archive/crla/notes/vol11-3c.htm http://www.nps.gov/archive/crla/notes/vol27e.htm //tools.wmflabs.org/geohack/geohack.php?language=v... http://www.dailymail.co.uk/travel/travel_news/arti... http://m.tienphong.vn/cong-nghe/bi-an-than-cay-kho... https://web.archive.org/web/20080611203611/http://...