Janvier 1954
Couverture d'Alex Schomburg

Rx Jupiter Save Us • Ward Moore • na
Ten Minutes to Daylight • Russ Winterbotham •
To Civilize • Algis Budrys • ss
High Sign • Dave Dryfoos • ss
The Penultimate Weapon • Theodore L. Thomas •

Mars 1954
Couverture d'Alex Schomburg

The Wayward Course • Randall Garrett • nv
The Oldfashioned Spaceman • Dave Dryfoos
The Payoff • Eando Binder
The Square Peg • Stephen Arr • ss
Wampum • Sam Merwin, Jr. • nv

Juin 1954
Couverture de Emsh

Peace on Earth • Irving Cox, Jr. • ss
Hail to the Chief • Sam Sackett • na
Sales Pitch • Philip K. Dick • ss
The Intimate Invasion • Sam Merwin, Jr. • ss
Rescue • Gordon R. Dickson • ss

Aoϋt 1954
Couverture de Kelly Freas

Cure, Guaranteed • T. L. Sherred • nv
Mirror, Mirror • Jerome Bixby • ss
The Marvelous Movie • Robert Abernathy •
Rosie Lived in a Bubble • Monroe Schere • ss
Guide Wire • Joe L. Hensley • ss
Asylum • Alice Bullock • ss

Nouvelle sιrie commencant curieusement par le numιro 28 1955 - N° 28
Couverture de Rudolph Belarsky

Mark of the Homoid • Irving E. Cox, Jr. • nv
Decline • William L. Bade • nv
Trial Without Combat • Theodore L. Thomas
This Thing Called Love • Carol Emshwiller •
Iron Man • Eando Binder • ss
Cornzan the Mighty • L. Sprague de Camp • nv

1956 - N° 29
Couverture de Kelly Freas

Vulcan's Hammer • Philip K. Dick • na
Code in the Head • Randall Garrett • ss
One Man's Inch • Richard Wilson • ss
Impractical Joke • L. Sprague de Camp • nv
Labor of Love • Wallace West • ss

1956 - N° 30
Couverture de Emsh

New Arcadia • L. Sprague de Camp • nv
Each an Explorer • Isaac Asimov • ss
The Day of the Boomer Dukes • Frederik Pohl •
Suite Mentale • Randall Garrett • ss
Heav'n, Heav'n • Eric Frank Russell • ss
Venus Trap • Robert Silverberg • ss
The Fourth Invasion • Henry Josephs • ss
The Hills of Home • Alfred Coppel • ss

Printemps 1957 - N° 32
Couverture de Emsh

Solitary • Robert Silverberg • ss
The In-Betweens • Richard Wilson • ss
Sinful City • Christopher Anvil • ss
Made to Order • Frank Belknap Long • na
The Mile • John Tara • vi
Nightmare Call • Carol Emshwiller • ss

Etι 1957 - N° 33
Couverture de Kelly Freas

Cat o' Nine Tales • Thomas N. Scortia • ss
A Season for Remorse • Robert Silverberg •
Mars Trial • Theodore L. Thomas • nv
...and a Half-Dozen of the Other • A. Bertram Chandler • ss
The Convincer • David Gordon • ss

Automne 1957 - N° 34
Couverture de Emsh

Starobin • Margaret St. Clair • ss
Cloak and Stagger • Gordon R. Dickson • nv
The Lonely Stars • Scott Nichols • ss
Force of Mortality • Robert Silverberg • ss
Last Meeting Place • Thomas N. Scortia • ss
The Professor from Pyjm • Bruce Tucker & Irving Cox, Jr. • ss
A Gun for Grandfather • F. M. Busby • ss
The Round Peg • George R. Hahn • ss

Avril 1958 - N° 36
Couverture de Emsh

The Woman You Wanted • Robert Silverberg • ss
The Case for Earth • Eric Frank Russell • ss
The Zoet Space • Earl Goodale • ss
The Silver Cube • Mark Hellington • nv
The Night the TV Went Out • George H. Smith • ss
Just Evie and Me... • Ron Smith • vi
Problem in Ecology • Don Berry • nv

Juin 1958 - N° 37
Couverture de Emsh

Intelligence Quotient • David Gordon • ss
Cargo: Death! [*Art Hamilton] • T. H. Mathieu • 
Time of the Tinkers • Joe L. Hensley • ss
The Back of a Hand • Theodore L. Thomas • ss
PCM1 • Walter Maneikis • ss
Just Call Me Irish • Richard Wilson • ss

Aoϋt 1958 - N° 38
Couverture de Emsh

The Song • A. Bertram Chandler • ss
The Earthquake Remedy [*Art Hamilton] • T. H. Mathieu • nv
The Last Threshold • Kate Wilhelm • ss
Object Lesson • Carl Groener • ss
Texas in the Sky • Richard Embs • ss