A 1970 article about a 1912 expedition to Maine’s Mount Katahdin that mentioned “a diagram that Thoreau had made in the middle of the last century when he paid Katahdin what was to become a famous visit” has set off a modern-day search for that map of Thoreau’s. Only, as the Lewiston Sun-Journal’s Steve Collins reports, no one seems to has a copy of, or even heard of, said map. [WMS]