Notes: "L'impero dei Mille Soli" is an original Italian collection that contains the complete The Conquest of Space Series, plus When Shadows Fall and Tough Old Man which a source (L. Ron Hubbard: Chronological list of works of fiction) report as first and ninth in the series. Contains: • Forbidden Voyage translated by Roberta Rambelli as "Il folle volo di George Caryle" • The Magnificent Failure translated by Roberta Rambelli as "Il grande fallimento di Jonathan Bates" • The Incredible Destination translated by Roberta Rambelli and Luigi Cozzi as "Il volo alle stelle di Jimmy Dolan" • The Unwillig Hero translated by Roberta Rambelli as "Vic Hardin, eroe suo malgrado" • The Last Admiral translated by Roberta Rambelli as "L'ultimo ammiraglio" • Beyond the Black Nebula translated by Roberta Rambelli as "Il segreto della Nebulosa Nera" • The Emperor of the Universe translated by Luigi Cozzi and Roberta Rambelli as "Io e Sua Maestà Astrale" • Tough Old Man translated by Roberta Rambelli as "Un "vecchio duro"" • When Shadows Fall translated by Luigi Cozzi as "Quando le stelle si allontanano…" Data from http://www.fantascienza.com, which reports an original title (The Conquest of Space Series, dated 1981) whose existence is unconfirmed.