Annιe 1927 - VOL. 1
Couverture de Frank R. Paul et dessin intιrieur pour "The Master Mind of Mars"

The Master Mind of Mars • Edgar Rice Burroughs • n.
The Face in the Abyss • A. Merritt • na 
The Man Who Saved the Earth • Austin Hall 
The People of the Pit • A. Merritt • ss 
The Man Who Could Vanish • A. Hyatt Verrill • 

Vol. 1, N° 1 - hiver 1928
Couverture de Frank R. Paul

The Moon of Doom • Earl L. Bell • nv
The Atomic Riddle • Edward S. Sears • nv
When the Sleeper Wakes • H. G. Wells • 
The Golden Vapor • E. H. Johnson • ss 
The Puzzle Duel • Miles J. Breuer, M.D. • ss
The Terrors of the Upper Air • Frank Orndorff •

VOL. 1, N° 3 - ιtι 1928
Couverture de Frank R. Paul

The Sunken World • Stanton A. Coblentz • n
Out of the Sub-Universe • R. F. Starzl • ss
The Menace [*Taine of San Francisco] • David H. Keller, M.D
Ten Days to Live • C. J. Eustace • nv

VOL. 1, N° 4 - automne 1928
Couverture de Frank R. Paul

The World of the Giant Ants • A. Hyatt Verrill
Stenographer's Hands • David H. Keller, M.D. •
Four Dimensional Transit [*Fourth Dimension (unnamed narrator)] • Bob Olsen • na
When the World Went Mad • Ronald M. Sherin
The Gravity King • Clelland J. Ball • ss

A Modern Atlantis • Frederick Arthur Hodge 
The Nth Man • Homer Eon Flint • na
The King of the Monkey Men • A. Hyatt Verrill • 
The Vibrator of Death • Harold F. Richards, Ph.D.
The Second Swarm • J. Schlossel • nv

Vol. 2, N° 1 - hiver 1929
Couverture de Frank R. Paul

Ralph 124C 41+ • Hugo Gernsback • n.
The Seventh Generation • Harl Vincent • nv
The Evolutionary Monstrosity • Clare Winger Harris 
The Murgatroyd Experiment • 
Capt. S. P. Meek 
The Beast-Men of Ceres  
Aladra Septama • nv
The Hollister Experiment • Walter Kateley • ss
What the Sodium Lines Revealed • L. Taylor Hansen • nv

VOL. 2, N° 2 - printemps 1929
Couverture de Frank R. Paul

After 12,000 Years • Stanton A. Coblentz • n.
Locked Worlds • Edmond Hamilton • na
The Cry from the Ether [*Severus Mansonby] • Aladra Septama • na
The City of Eric • Quien Sabe • nv

Vol. 2, N° 3 - ιtι 1929
Couverture ?

Venus Liberated • Harl Vincent • n.
Rays and Men • Miles J. Breuer, M.D. • na
White Collars • David H. Keller, M.D. • ss
Paradox • Charles Cloukey • nv
Dr. O'Glee's Experiments • T. Proctor Hall • 
The Singing Moonbeams • Edward S. Sears 

Vol. 2, N° 4 - automne 1929
Couverture de H. Wesso

The Bridge of Light • A. Hyatt Verrill • n.
Euthanasia Limited • David H. Keller, M.D. • nv
The Other Side of the Moon • Edmond Hamilton 
When the Earth Grew Cold • Paul H. Lovering • 

Vol. 3, N° 2 - printemps 1930
Couverture de Leo Morey

Reclaimers of the Ice • Stanton A. Coblentz • 
Dragons of Space • Aladra Septama • na
The Flying Threat • David H. Keller, M.D. • 
The Red Ray • Dan Fabers • nv

VOL. 3, N° 4 - automne 1930
Couverture de Leo Morey

A Modern Prometheus • Cyril G. Wates • n
The Black Star Passes [*Arcot, Wade & Morey] • John W. Campbell, Jr. • na Boomeranging 'Round the Moon • David H. Keller, M.D. • ss
The Triple Ray • R. V. Happel • ss
Terrors of Arelli [*Frederick Harding] • Aladra Septama • na Dr. Immortelle • Kathleen Ludwick •

VOL. 4, N° 1 - hiver 1931
Couverture de Leo Morey

The Birth of a New Republic • Miles J. Breuer, M.D. & Jack Williamson • n. Elaine's Tomb • G. Peyton Wertenbaker • nv
When the Moon Ran Wild • A. Hyatt Verrill •
Service First • David H. Keller, M.D. • nv

Islands of Space  • John W. Campbell, Jr. 
Moon People of Jupiter • Isaac R. Nathanson 
Invisible Ships • Harl Vincent • nv
Extra-Galactic Invaders • J. Schlossel • na

The Blue Barbarians • Stanton A. Coblentz • 
Half-Mile Hill • David H. Keller, M.D. • ss
The Menace of the Little • Roscoe B. Fleming • n
Cosmic Menace • A. W. Bernal • ss
Deap Sea Justice • Ed Earl Repp • nv
The Giant Puffball • Eugene Stowell • ss

Vol. 4, N° 4 - automne 1931
Couverture de Leo Morey

Seeds of Life • John Taine • n.
The Demons of Rhadi-Mu • Miles J. Breuer, 
Dramatis Personζ • Joe W. Skidmore • nv
The War of the Universe • Clinton Constantinescu 
The Mechanical Heart • H. I. Barrett • ss
Paladins of the Sky • Warwick Janus • ss

Vol. 5, N° 1 - hiver 1932
Couverture de Leo Morey

A Voice Across the Years • I. M. Stephens & Fletcher Pratt • n.
Once in a Blue Moon • Harl Vincent • nv
Insects Extraordinary • Walter Kateley • nv
Blue Water • William Lemkin, Ph.D. • na
Starvation in Space • Earle H. Morris • nv
Moss Island • Carl Jacobi • ss
Naval Control • John Shamus O'Donnell • ss