All-new Introduction by Mark Van Name. Two classic Robert A. Heinlein novels in one volume: The Man Who Sold the Moon and Orphans of the Sky. Journeys into space, one taking humans to space by hook or by crook, the other the classic first-time tale of a generation vessel with passengers who do not realize they are in a spaceship.

Two classic Robert A. Heinlein novels in one volume, with an all-new introduction by Mark L. Van Name, author of the Jon and Lobo military SF series.

The Man Who Sold the Moon: D. D. Harriman is a billionaire with a dream: the dream of...