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WikiPedia: USS_Helena_(CL-50) http://books.google.com/books?id=53l3ebkpCjcC http://www.history.navy.mil/danfs/h4/helena-ii.htm http://www.uboat.net/allies/warships/ship/2574.htm... //tools.wmflabs.org/geohack/geohack.php?language=v...