Volume 18, Number 6. Published bi-monthly by Galaxy Publishing Corporation, 421 Hudson St., New York. Editor, H.L. Gold, publisher, Robert M. Guinn; science editor, Willy Ley; art director, Sam Ruvidich; assistant to the publisher, Joan J. De Mario; assistant to editor, Carla Camp; cover artist, Emsh; illustrators, Carter, Burns, Trattner, Wood, Dick Francis and Emsh.

Novelet. Illustrated by Carter. Appeared in the anthologies [i]Mind Partner and 8 Other Novelets from Galaxy[/i] edited by H.L. Gold, published in 1961, [i]Neglected Visions[/i] edited by Joseph D. Olander, Martin Harry Greenberg and Barry N. Malzberg, published in 1979 and [i]The Great SF Stories #22[/i] edited by Isaac Asimov and Martin H. Greenberg, published in 1991. Also appeared in the collected works [i]The Trouble with Aliens[/i] published in 2006.

Novelet. Illustrated by Wood.

Short story. Illustrated by Burns. Appeared in the anthology [i]The Sixth Galaxy Reader[/i], H.L. Gold, ed. (1962).

Short story. Illustrated by Trattner.

Short story. Illustrated by Dick Francis.

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 18, Number 6. Published bi-monthly by Galaxy Publishing Corporation, 421 Hudson St., New York. Editor, H.L. Gold, publisher, Robert M. Guinn; science editor, Willy Ley; art director, Sam Ruvidich; assistant to the publisher, Joan J. De Mario; assistant to editor, Carla Camp; cover artist, Emsh; illustrators, Carter, Burns, Trattner, Wood, Dick Francis and Emsh.