Notes: First Ballantine printing. Artists signature on cover. Pages 142-144 are mentioned in the contents page but are unnumbered in the book. The title is "Titles mentioned in text published in paperback editions" and is uncredited. This section list authors, titles,catalogue#,price & publisher, Ballantine and others. Publication date from 'The Science Fiction Collector' #6 LCCN 60-5441 on the copyright page, but this is for the Harcourt, Brace first edition.