Number 1Edit
January 1951
Cover art by Robert Gibson Jones
- Landing on Loki • Carter T. Wainwright • vignette
- Empire of Evil [Darrien] • Robert Arnette • novella
- Operation R.S.V.P. • H. Beam Piper • short story
- Never Trust a Martian! • Paul W. Fairman • novelette
- The Devil, You Say? • Charles Beaumont • novelette
- This Curse for You • Frances M. Deegan • short story
- Ask Me No Questions! • Mack Reynolds • short story
- Secret of the Death Dome • Walter M. Miller • novelette
- Facts of the Future: Once Upon a Time… • Lynn Standish • vignette
- Facts of the Future: Today Is Tomorrow! • Lynn Standish • vignette
- Facts of the Future: Interstellar Piracy! • Lynn Standish • vignette
- Facts of the Future: Pipe-Line Robot! • Lynn Standish • vignette
Number 2Edit
February 1951
Cover art by Robert Gibson Jones
- Vanguard of the Doomed • Gerald Vance • novelette
- The Man Who Forgot • Charles Creighton • novelette
- Terror Out of Zanadu • Robert Moore Williams • novelette
- That a World Might Live • Burt B. Liston • novelette
- The Boy Who Cried Wolf 359 • Kendell Foster Crossen • short story
- Gordak's Cargo • Milton Lesser • short story
- The Way of a Weeb • H. B. Hickey • novelette
Number 3Edit
March 1951
Cover art by Robert Gibson Jones
- Beyond the Rings of Saturn • Robert Moore Williams • novella
- Ticket to Venus • E. K. Jarvis • short story
- Laughing Matter • H. B. Hickey • short story
- No Medal for Captain Manning • William P. McGivern • short story
- Whom the Gods Destroy (Costello) • P. F. Costello • novella
- "You'll Die Yesterday!" • Rog Phillips • short story
- Secret of the Burning Finger • John W. Jakes • short story
Number 4Edit
April 1951
Cover art by Robert Gibson Jones
- The Glory That Was Rome! • E. K. Jarvis • novella
- Satisfaction Guaranteed [Susan Calvin; Robots] • Isaac Asimov • short story (© Copyright Renewed: details pending.)
- Let's Give Away Mars! • Clee Garson • short story
- The Star Grabbers • H. B. Hickey • novelette
- Find Me in Eternity • Robert Moore Williams • novelette
- The Last Touch of Venus • Kendell Foster Crossen • short story
- On Some Distant Star • Charles Creighton • short story
- The Martian Rocket • Merritt Lynn • vignette
Number 5Edit
May 1951
Cover art by Robert Gibson Jones
- Planet of No Return • Lawrence Chandler • novella
- They Won't Believe Me • Graham Doar • short story
- Ride That Stardust Trail • H. B. Hickey • novelette
- They Who Sleep • V. E. Thiessen • short story
- The Voyage of the Sitting Duck • Burt B. Liston • novelette
- Vampire of the Deep • Rog Phillips • short story
Number 6Edit
June 1951
Cover art by Robert Gibson Jones
- Men Behind Amazing Stories: Rog Phillips • Rog Phillips • bg
- Who Sows the Wind… • Rog Phillips • novella
- The Two-Timer • H. B. Hickey • short story
- We'll Get You Yet! • P. F. Costello • novelette
- Nuisance Value • Walt Sheldon • short story
- Flight to Dishonor • Gerald Vance • short story
Number 7Edit
July 1951
Cover art by Joseph W. Tillotson
- Men Behind Amazing Stories: Chester S. Geier • Chester S. Geier • bg
- We, the Machine • Gerald Vance • novella
- What Price Gloria? • Emmett McDowell • novelette
- Good Luck, Columbus! • Frank Robinson • short story
- You'll Die on Ganymede! • Guy Archette • novelette
- When Vengeance Rules… • Charles Creighton • novelette
- One Man's Epitaph • Charles Recour • vignette
- The Sky Was Filled with Light • H. B. Hickey • short story
- Who Plays with Fire… • Tom Lynch • vignette
- It Happened on Mars… • Salem Lane • vignette
- Seeds of Destruction • Omar Booth • vignette
Number 8Edit
August 1951
Cover art by Robert Gibson Jones
- Men Behind Amazing Stories: Raymond F. Jones • Raymond F. Jones • bg
- The Wrong Side of Paradise • Raymond F. Jones • novella
- Devil on the Moon • George Lasker • vignette
- The Feathered Weapon • Chester S. Geier • novelette
- Death by Degrees • Robert Arnette • short story
- A Day to Forget • Charles Creighton • novelette
- From Hidden Worlds • Milton Lesser • novelette
- Martian Through Georgia • Walt Sheldon • short story
- No Man Is Ever Alone • Milton Matthew • vignette
- Out of the Darkness… • Charles Recour • vignette
- Nothing • Pete Bogg • vignette
Number 9Edit
September 1951
Cover art by Robert Gibson Jones
- A World He Never Made • Edwin Benson • novella
- You've Got to Believe • Frank M. Robinson • novelette
- The Green Blood of Treachery • Willard E. Hawkins • novella
- Some Wolves Can't Kill! • William P. McGivern • novelette
- The Betrayers • Gene Hunter • short story
- When the World Went Black • Salem Lane • vignette
Number 10Edit
October 1951
Cover art by Robert Gibson Jones
- Pioneer to Venus • Salem Lane • vignette
- Forty Days Has September • Milton Lesser • novella
- The Perfect Hideout • Gerald Vance • novelette
- Old Spacemen Never Die! • John Jakes • novella
- Death's Derelict • Chester S. Geier • novelette
- Cube Sinister • Arthur G. Stangland • short story
- This Must Not Happen! • John Weston • vignette
- Pirates Out of Space • E. Bruce Yaches • vignette
Number 11Edit
November 1951
Cover art by Julian Krupa & Ed Swiatek
- Flaherty's Lucky Day • E. Bruce Yaches • vignette
- Beyond the Walls of Space • S. M. Tenneshaw • novella
- Proud Asteroid • Paul W. Fairman • short story
- The Pyramids from Space • Barry Cord • novella
- The Space Witch • Walter M. Miller • novelette
- Step Out of Your Body, Please! • Rog Phillips • short story
- A Matter of Stupidity • Robert Arnette • short story
Number 12Edit
December 1951
Cover art by Robert Gibson Jones
- Somewhere I'll Find You! • Stephen Marlowe • novella
- The Little Creeps • Walter M. Miller • novelette
- Return Engagement • H. B. Hickey • short story
- The Hatchetman • Mack Reynolds & Fredric Brown • novelette
- Checkmate for Aradjo • Rog Phillips • novelette
- No Monument So Proud! • Salem Lane • vignette