An expansion of the 1966 collection titled The Worlds of Robert A. Heinlein. A majority of the material, however, is new to this volume; a sizeable amount has never been reprinted since its first appearance. It holds a great deal of biographical material in the form of extended forewords and afterwords.
- Cover art not credited and there is no visible signature.
- "FIRST EDITION" stated on front of dustjacket.
- "First Printing: 1980" on copyright page.
- Month of publication from the 1982 Ace edition.
- Numerous photos scattered throughout the articles. Some with credits, some without.
- Illustrations by Stephen Fabian on pages 95, 387, 420 and 473.
