Number 1 edit
January 1961
Cover art by Ed Valigursky
- The Asteroids, 2194 [Troons] • John Wyndham • short story (© Copyright Restored due to URAA; First published in the UK in New Worlds Science Fiction, 1960.)
- Dark Companion • Robert Silverberg • novelette (© Copyright Renewed: details pending.)
- Unto Us a Child Is Born • David H. Keller • short story
- The Last Vial [Part 3 of 3] • Sam McClatchie • novel
- Floor of Heaven • T. D. Hamm • vignette
Number 2 edit
February 1961
Cover art by Alex Schomburg
- When the Dream Dies • A. Bertram Chandler • novella
- Introduction to "The Man Who Saw the Future" • Sam Moskowitz • article (© Copyright Renewed: details pending.)
- The Man Who Saw the Future • Edmond Hamilton • short story
- The Final Decision • David R. Bunch • short story (© Copyright Renewed: details pending.)
- What Need of Man? • Harold Calin • short story
- Revenge • Arthur Porges • short story
Number 3 edit
March 1961
Cover art by Leo R. Summers
- A Dusk of Idols • James Blish • novelette (© Copyright Renewed: details pending.)
- Playboy and the Slime God • Isaac Asimov • short story (© Copyright Renewed: details pending.)
- The Unknown • William F. Temple • novelette
- Introduction to "The Last Evolution" • Sam Moskowitz • article (© Copyright Renewed: details pending.)
- The Last Evolution • John W. Campbell • short story
- The Risk Profession • Donald E. Westlake • novelette
- Political Machine • John Jakes • short story (© Copyright Renewed: details pending.)
Number 4 edit
April 1961
Cover art by Frank R. Paul
- Introduction to "I, Rocket" • Sam Moskowitz • article (© Copyright Renewed: details pending.)
- I, Rocket • Ray Bradbury • short story
- Introduction to "Devolution" • Sam Moskowitz • article (© Copyright Renewed: details pending.)
- Devolution • Edmond Hamilton • short story
- Introduction to "John Carter and the Giant of Mars" • Sam Moskowitz • article (© Copyright Renewed: details pending.)
- John Carter and the Giant of Mars [Barsoom] • Edgar Rice Burroughs • novella (© Copyright Renewed: details pending.)
- Introduction to "Out of the Sub-Universe" • Sam Moskowitz • article (© Copyright Renewed: details pending.)
- Out of the Sub-Universe • R. F. Starzl • short story
- Introduction to "I, Robot" • Sam Moskowitz • article (© Copyright Renewed: details pending.)
- I, Robot [Adam Link] • Eando Binder • short story (© Copyright Renewed: details pending.)
- Introduction to "The Flying Fool" • Sam Moskowitz • article (© Copyright Renewed: details pending.)
- The Flying Fool • David H. Keller • short story
- Introduction to "Armageddon—2419 A.D." • Sam Moskowitz • article (© Copyright Renewed: details pending.)
- Armageddon—2419 A.D. [Anthony "Buck" Rogers] • Philip Francis Nowlan • novella
Number 5 edit
May 1961
Cover art by Alex Schomburg
- The Planet of Shame [Part 1 of 2] • Bruce Elliott • novel
- The Beginning • Henry Hasse • short story
- Dead World • Jack Douglas • short story
- The Happiest Missile • Raymond E. Banks • short story (© Copyright Renewed: details pending.)
- Introduction to "The Undersea Tube" • Sam Moskowitz • article (© Copyright Renewed: details pending.)
- The Undersea Tube • L. Taylor Hansen • short story
Number 6 edit
June 1961
Cover art by Stan Mott
- Weapon • J. F. Bone • novelette
- Before Eden • Arthur C. Clarke • short story
- A Time to Die • Harold Calin • novelette
- Robert Heinlein: Man, Myth or Monster? • Sam Moskowitz • article (© Copyright Renewed: details pending.)
- The Planet of Shame [Part 2 of 2] • Bruce Elliott • novel
- Introduction to "The Exterminator" • Sam Moskowitz • article (© Copyright Renewed: details pending.)
- The Exterminator • A. Hyatt Verrill • short story
Number 7 edit
July 1961
Cover art by Albert A. Nuetzell
- Pariah Planet [Med Service] • Murray Leinster • novella
- Whatever Gods There Be • Gordon R. Dickson • short story (© Copyright Renewed: details pending.)
- Father • Dan Morgan • short story
- Introduction to "The Coming of the Ice" • Sam Moskowitz • article (© Copyright Renewed: details pending.)
- The Coming of the Ice • G. Peyton Wertenbaker • short story
Number 8 edit
August 1961
Cover art by Emsh
- The Highest Form of Life • John Jakes • short story (© Copyright Renewed: details pending.)
- The Great Implication • Stanley R. Lee • short story
- The Man Who Had No Brains [Part 1 of 2] • Jeff Sutton • novel
- The Worlds of A.E. van Vogt • Sam Moskowitz • article (© Copyright Renewed: details pending.)
- The Legacy • Dick Hank • vignette
- The Survivors • T. D. Hamm • short story
Number 9 edit
September 1961
Cover art by Alex Schomburg
- Tongues of the Moon • Philip José Farmer • novelette
- Hen's Eyes • Brian W. Aldiss • short story (© Copyright Renewed: details pending.)
- The Man Who Had No Brains [Part 2 of 2] • Jeff Sutton • novel
Number 10 edit
October 1961
Cover art by Alex Schomburg
- I-C-a-BeM • Jack Vance • novelette (© Copyright Renewed: details pending.)
- The Wellsprings of Space • Albert Teichner • short story
- Try to Remember! • Frank Herbert • novelette
- What Makes Bradbury "Burn"? • Sam Moskowitz • article (© Copyright Renewed: details pending.)
- Introduction to "The Hungry Guinea-Pig" • Sam Moskowitz • article (© Copyright Renewed: details pending.)
- The Hungry Guinea-Pig • Miles J. Breuer • novelette
Number 11 edit
November 1961 (transcription project)
Cover art by Alex Schomburg
- Meteor Strike! • Donald E. Westlake • novelette
- Hystereo • Maurice Baudin • short story
- Counter-Psych • Charles Eric Maine • novella
Number 12 edit
December 1961
Cover art by Lloyd Birmingham
- The Memory of Mars • Raymond F. Jones • novelette
- The Star Hyacinths • James H. Schmitz • short story
- Mother America • Sam McClatchie • short story
- The Strange Case of Murray Leinster • Sam Moskowitz • article (© Copyright Renewed: details pending.)
- The Cosmic Express • Jack Williamson • short story