- Vol. 22, No. 2, Issue 169.
- December is listed on the cover and spine with November-December listed on the table of contents.
- Published for distribution in the US and the UK. Interiors are identical. Covers are identical except for pricing.
- Titled Worlds of If Science Fiction on the cover and contents page. Titled If Science Fiction on the spine and If on the footer of even-numbered pages.
- Cover suggest by "Inheritance" as noted on the Contents/copyright page (scanned version from archive.org).
- No interior artwork is explicitly credited. Jack Gaughan's artwork identified by signature.
The full text and images of this edition are available at The Internet Archive, see web page for link.
