About the book: year / Duology "Jerry and Michael" and five off-cycle novels. Contents:1. Adventure (1910)2. Mutiny on the Elsinore (1914)3. Interstellar Hulk (1914)4. The Little Mistress of the Big House (1916)5. Jerry the Islander (1917)6. Michael, Jerry's brother (1917)7. Hearts of three. Novel (1920)