N° 1 - ιtι 1950
Couverture de Powell

The Belt • J. M. Walsh • nv
Time's Arrow • Arthur C. Clarke • ss
Monster • Christopher Youd • ss
The Cycle • P. E. Cleator • ss
Advent of the Entities [*Arnold Royce] • E. R. James • nv

N° 2 - hiver 1950/1951
Couverture de Turner

The Ark • Francis G. Rayer • nv
Black-Out • John Russell Fearn • ss Silence, Please! [*Harry Purvis (White Hart)] • Charles Willis • ss
History Lesson • Arthur C. Clarke • ss
Martian Mandate • Norman C. Pallant • ss

N° 3 - hiver 1951/1952
Couverture de R.M. Bull

Pawley's Peepholes ["Operation Peep"] • John Wyndham •
The Undying Enemy • Francis G. Rayer • ss
Double Trouble • William F. Temple • ss
Then There Were Two • J. T. M'Intosh • ss The Moving Hills [*Colin Ruskin] • E. R. James • ss
Grounded • E. C. Tubb • ss
Loser Take All • N. K. Hemming • nv

N° 4 - printemps 1952
Couverture de R.M. Bull

Resurrection • John Christopher • na
Next in Line • A. Bertram Chandler • ss
The Treasure of Tagor • Sydney J. Bounds • ss
Plimsoll Line ["When Greed Steps In..."; *Jock MacTavish] • Francis G. Rayer • ss
Outworlder [*Stalvey] • Peter Hawkins • nv

N° 5 - automne 1952
Couverture de Gerard Quinn

Stitch in Time • J. T. M'Intosh • nv
Was Not Spoken • E. E. Evans • ss
Circus [*Stalvey] • Peter Hawkins • nv
Not as We Are [*Colin Ruskin] • E. R. James • nv
Enemy in Their Midst • Alan Barclay • ss

N° 6 - printemps 1953
Couverture de Gerard Quinn

The Volunteers • J. T. M'Intosh • nv
Mr. Kowtshook • John Christopher • ss Confessional • E. C. Tubb • ss
Traders' Planet [*Jock MacTavish] • Francis G. Rayer • ss
One in Every Port • Richard Lawrence • ss
Insurance Policy • Lan Wright • ss
Time to Go Home • J. F. Burke • ss

N° 7 - 1954
Couverture de Gerard Quinn

Seek Earthmen No More • Francis G. Rayer • nv
Death Sentence [as by William Vine] • John Christopher • ss 
Stranger from Space • Eugene Lees • ss
Beggars All • J. T. M'Intosh • nv 
The Trojan Way • Francis Richardson • ss
Detective Story • J. F. Burke • ss
Unfortunate Purchase • E. C. Tubb • ss

N° 8 - 1954
Couverture de Gerard Quinn

Tomorrow • E. C. Tubb • nv
The Shimmering Tree • Margaret Lowe • ss
Space Prize [*Jock MacTavish] • Francis G. Rayer • ss
Once Upon a Time • Jonathan Burke • ss
Take a Letter • P. W. Cutler • ss
Dawn of Peace Eternal • John Ashcroft • ss
The Conquerors • Lan Wright • nv

N° 9 - 1954
Couverture de Gerard Quinn

This Prescious Stone • H. J. Murdoch • nv
Criminal Record • Brian W. Aldiss • ss
Six of One... • A. Bertram Chandler • ss Occupational Hazard • E. C. Tubb • ss
Last Man on Mars • W. P. Cockcroft • ss
Family Secret • Arthur Coster • ss
Haven • Peter Hawkins • nv

N° 10 - 1954
Couverture de Partridge

Five into Four • J. T. McIntosh • nv
Bitter Sweet • E. C. Tubb • ss
Zone of Youth • Martin Jordan • ss
The Chronoclasm • John Wyndham • nv
Dark Summer • Francis G. Rayer • ss
Stone and Crystal • John Ashcroft • ss
Unborn of Earth • Les Cole • nv

N° 11 - 1954
Couverture de Gerard Quinn

Live For Ever • J. T. McIntosh • nv
Where's the Matter? • Richard Rowland • ss
I Hear You Calling • Eric Frank Russell • ss
The Tooth • G. Gordon Dewey • ss
The Enemy Within Us • E. C. Tubb • ss
The Mailman • Joseph Slotkin • ss
Co-Efficiency Zero • Francis G. Rayer • ss
First Trip • Sydney J. Bounds • ss
Dimple [*Dimple] • John Kippax • ss

N° 12 - 1955
Couverture de Gerard Quinn

The Wrong Track [as by George Whitley] • A. Bertram Chandler • nv
The Dragon • Alan Barclay • ss
The Last Day of Summer • E. C. Tubb • ss
Auto-Fiction Ltd. • Wanless Gardener • nv
Eternity • William F. Temple • nv
Free Will • Dal Stivens • ss
Breathing Space • Brian W. Aldiss • ss