Shipwrecks of Isle Royale National Park: The Archeological Survey
by Daniel Lenihan (Editor) - Originally published as a research document by the National Park Service's Submerged Cultural Resources Unit, this edited version contains fascinating, indepth historical, archeological and sport diving information on all of Isle Royale's major divable shipwrecks.  This book has become the prototype for many similar works and is indespensible for divers who plan to visit the park's wrecks.   The book includes excellent archeological sitemaps and locational information for all the wrecks. 
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