Wikipedia page about this book: https://en.wikipedia.org/wiki/Godfrey_Morgan

Release date is 2007-11-15

Produced by Taavi Kalju, Martin Pettit and the Online
Distributed Proofreading Team at http://www.pgdp.net (This
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"Godfrey Morgan: A Californian Mystery" by Jules Verne is an adventure novel published in 1882. When wealthy young Godfrey Morgan and his deportment instructor embark on a round-the-world voyage from San Francisco, they are shipwrecked on an uninhabited Pacific island. Forced to survive in the wilderness, the pampered youth must learn self-sufficiency while facing hostile intruders and mysterious dangers. Later joined by an African slave they rescue, the castaways must work together to endure their island ordeal in this robinsonade inspired by Robinson Crusoe. (This is an automatically generated summary.)

Original publication data not identified