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December 1909: Men in arctic suits advertising the Shackleton Lantern Lecture, which tells the story of Irish explorer Ernest Shackleton, who came within a record-breaking 97 miles of reaching the South Pole. (Photo by Topical Press Agency/Getty Images)

December 1909:  Men in arctic suits advertising the Shackleton Lantern Lecture, which tells the story of Irish explorer Ernest Shackleton, who came within a record-breaking 97 miles of reaching the South Pole.  (Photo by Topical Press Agency/Getty Images)