Davidson's Goliaths
by David Cooper - Wisconsin Underwater Archeologists David Cooper and John Jensen did an intensive study of the vessels of legendary Great Lakes shipbuilder James Davidson.   Information was obtained primarily from archeological investigation of the wrecks of the Pretoria at the Apostle Islands and the Frank O'Conner off Door County.  The result is a comprehensive book with excellent historical and dive information.  All Wisconsin divers will enjoy this book.
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