Short story. Illustrated by Dick Francis. L.J. Stecher, Jr.: pen-name used by Joseph Wesley. Part of the Delta Crucis series. Appeared in the anthologies [i]The Tenth Galaxy Reader[/i] edited by Frederik Pohl, published in 1967, and [i]Door to Anywhere[/i] edited by Frederik Pohl, published in 1970.

Book-length novel: conclusion. Illustrated by Emsh. Published as a novel in 1960 under the same title.

Science Department article.

Volume XLVI, No. 1. Published by Street & Smith Publications, 575 Madison Ave., New York. Editor, John W. Campbell, Jr.; assistant editor, Kay Tarrant; advertising manager, Walter J. McBride; art director, H.A. Staab; cover artist, van Dongen; illustrator, van Dongen.

Novelette. Illustrated by van Dongen. David Gordon: pen-name used by Randall Garrett. Available as a free ebook on Project Gutenberg.

Novelette. Illustrated by van Dongen. Available as a free ebook on Project Gutenberg.

Short story. Illustrated by van Dongen. Available on Project Gutenberg as a free ebook. Available as an audio book on LibriVox. Appeared in the collection [i]H.B. Fyfe Resurrected: The Works of Horace Brown Fyfe[/i] published in 2010.

Short story. Illustrated by van Dongen. Winston P. Sanders: pen-name used by Poul Anderson.

Serial: conclusion. Illustrated by van Dongen. Published as a novel under the same title in 1960.

Science Fact article.