Volume XXV, Number 5. Published by Street & Smith Publications, Inc., 79 7th Ave., New York. Editor, John W. Campbell, Jr.; cover artist, Hubert Rogers; illustrators, R. Isip, Orban and Schneeman.

Serial: 1st of 2 parts. Illustrations by R. Isip. Appeared in the anthologies [i]Five Science Fiction Novels[/i], edited by Martin Greenberg, published in 1952; and [i]The Crucible of Power[/i], edited by Martin Greenberg, published in 1953.

Novelette. Illustrations by Orban. Part of the Future History Series.

Novelette. Illustrations by Schneeman. Appeared in the anthologies [i]Men Against the Stars[/i], Martin Greenberg, ed. (1950); [i]Famous American Science Fiction #1[/i] (1952); [i]The Year After Tomorrow: An Anthology of Science Fiction Stories[/i], Lester del Rey, Cecil Matschat and Carl Carner, ed. (1954); [i]More Adventures on Other Planets[/i], Donald A. Wollheim, ed. (1963).

Short story. Illustrations by Orban.

Short story. Illustrations by Schneeman. Appeared in the anthologies [i]The Big Book of Science Fiction[/i], edited by Groff Conklin, published in 1950; and [i]Fifty Short Science Fiction Tales[/i], edited by Isaac Asimov and Groff Conklin, published in 1963, reprinted numerous times.

Short story. Illustrations by R. Isip. Kurt von Rachen: pen name used by L. Ron Hubbard. Part of the Kilkenny Cats Series.

Short story. Illustrations by Orban.

Article: 1st of 2 parts. Illustrations by Schneeman.

Volume XXV, Number 5. Published by Street & Smith Publications, Inc., 79 7th Ave., New York. Editor, John W. Campbell, Jr.; cover artist, Hubert Rogers; illustrators, R. Isip, Orban and Schneeman.