The book collects several novelettes and short stories by various science fiction authors, with a foreword by Diane Loyd taking the place of the customary one by Carnell, in consequence of the latter's death.

The book collects twelve novelettes and short stories by various science fiction authors, with an introduction, notes and concluding essays by Carr and Charles N. Brown.

The book collects fifteen novelettes and short stories by various science fiction authors, with an introduction by the editors.

The book collects several novelettes and short stories by various science fiction authors, with a foreword by Bulmer.

The book collects seven works by various science fiction authors, including a novel by Andre Norton and novellettes and short stories by the remaining authors, together with a general introduction by the editor and an introduction to the Norton piece by its author.

The book collects eleven novellas, novelettes and short stories by various science fiction authors, with an introduction by Isaac Asimov taking the place of the usual such effort by Wollheim.

The book collects twelve novelettes and short stories by various science fiction authors, with an introduction by Carr.

The book collects thirteen novelettes and short stories by various science fiction authors.