 See Philip K. Dick bibliography for information about the mass market reprints.Many of the stories had originally appeared in the magazines "Fantasy and Science Fiction", "Planet Stories", "If", "Galaxy Science Fiction", "Imagination", "Space Science Fiction", "Fantastic Story Magazine", "Amazing Stories", "Future Science Fiction", "Cosmos", "Fantasy Fiction", "Beyond Fantasy Fiction", "Thrilling Wonder Stories", "Startling Stories", "Fantastic Universe", "Science Fiction Quarterly", "Astounding", "Science Fiction Adventures", "Science Fiction Stories", "Orbit", "Satellite Science Fiction", "Imaginative Tales", "Fantastic", "Worlds of Tomorrow", "Escapade", "Famous Science Fiction", "Niekas", "Rolling Stone College Papers", "Interzone", "Playboy", "Omni" and "The Yuba City High Times".The following stories are ones that were left out of this collection.