Entirely New Feature of a Thrilling Novel! Entitled, The Social War of the year 1900; or, The Conspirators and Lovers! By: Simon Landis

Equation of Doom By: Gerald Vance

Evacuation of England: The Twist in the Gulf Stream By: Louis Pope Gratacap

Fire People By: Ray Cummings

First Lensman By: E. E. Smith

First on the Moon By: Jeff Sutton

Fixed Period By: Anthony Trollope

Flame Breathers By: Ray Cummings

Food of the Gods, and How It Came to Earth (version 2) By: H. G. Wells

Forgotten Planet By: Murray Leinster

Four Science Fiction Novellas By: Harl Vincent

Four Science Fiction Stories By: Alan E. Nourse

Four Science Fiction Stories by G.L.Vandenburg By: G. L. Vandenburg

From the Earth to the Moon, Version 2 By: Jules Verne

Futuria Fantasia, Spring 1940 By: Ray Bradbury

Galaxy Primes By: E. E. Smith

Gambler's World & The Yillian Way By: Keith Laumer

Giphantia By: Charles-François Tiphaigne de La Roche

Gladiator By: Philip Wylie

Great Explorers in Space By: Various

Green Millennium By: Fritz Leiber

Green Odyssey (version 2) By: Philip José Farmer

Green World By: Hal Clement

Happy Unfortunate By: Robert Silverberg

Hartmann the Anarchist, or the Doom of a Great City By: Edward Douglas Fawcett

Heads of Cerberus By: Francis Stevens

Herbert West: Reanimator By: H. P. Lovecraft

His Master's Voice By: Randall Garrett

His Wisdom, the Defender: A Story By: Simon Newcomb

Honeymoon in Space By: George Griffith

Hunter Patrol By: H. Beam Piper and John McGuire

I Was a Teen-Age Secret Weapon By: Richard Sabia

Impossibles By: Randall Garrett

In the Clutch of the War-God By: Milo Hastings

Inside Earth By: Poul William Anderson

Invaders from the Infinite By: John Wood Campbell. Jr.

Islands of Space By: John Wood Campbell. Jr.

Jason, Son of Jason By: John Ulrich Giesy

Jetta of the Lowlands By: Ray Cummings

Jewel of Bas By: Leigh Douglass Brackett

Jewels of Aptor By: Samuel R. Delaney

Jewels of Gwahlur By: Robert E. Howard

Kreativity for Kats & Other Stories By: Fritz Leiber

Last Call for Sector G By: Leigh Douglass Brackett

Look to the Stars By: Willard E. Hawkins

Lord of a Thousand Suns By: Poul William Anderson

Lorelei of the Red Mist By: Leigh Douglass Brackett

Lucian's True History By: Lucian of Samosata

Machine Stops (version 4) By: Edward M. Forster

Man Obsessed By: Alan E. Nourse

Man on the Meteor By: Ray Cummings

Man Who Ended War By: Hollis Godfrey

Mars is My Destination By: Frank Belknap Long

Martian By: Allen Glasser

Master of Life and Death By: Robert Silverberg

Masters of the Vortex By: E. E. Smith

Mayfair Magician; a Romance of Criminal Science By: George Griffith

Med Ship Man By: Murray Leinster

Med Ship Man (version 2) By: Murray Leinster

Men in the Walls By: William Tenn

Men Like Gods By: H. G. Wells

Metal Giants By: Edmond Hamilton

Metal Moon By: Everett C. Smith

Mists of Mars By: George A. Whittington

Moon Destroyers By: Monroe K. Ruch

Moon Maid By: Edgar Rice Burroughs

Mouthpiece of Zitu By: John Ulrich Giesy

Mr. Spaceship By: Philip K. Dick

Mummy! A Tale of the Twenty-Second Century By: Jane C. Loudon

Naudsonce By: H. Beam Piper

Nequa or The Problem of the Ages By: Jack Adams

New Bodies for Old By: Maurice Renard

New Lamps By: Robert Moore Williams

Nice Girl With 5 Husbands By: Fritz Leiber

Nightmare Planet By: Murray Leinster

Nine Sci-fi Stories by Poul Anderson By: Poul William Anderson

Nineteen Science Fiction Short Stories By: James Harmon

Nor Iron Bars A Cage.... By: Randall Garrett

Null-ABC By: H. Beam Piper

Olga Romanoff By: George Griffith

Omega: The Last Days of the World By: Camille Flammarion

Operation Interstellar By: George O. Smith

Out of the Iron Womb! By: Poul William Anderson

Palos of the Dog Star Pack By: John Ulrich Giesy

People Minus X By: Raymond Z. Gallun

Phantoms of Reality By: Ray Cummings

Plague of Pythons By: Frederik Pohl

Planet Mappers By: Edward Everett Evans

Planet of Dread By: Murray Leinster

Plattner Story and Others By: H. G. Wells

Police Your Planet By: Lester del Rey

Preferred Risk By: Frederik Pohl

Push Of A Finger By: Alfred Bester

QRM-Interplanetary By: George O. Smith

Queen of Appalachia By: Joe H. Borders

Queen of the Black Coast By: Robert E. Howard

Queen Of The Martian Catacombs By: Leigh Douglass Brackett

Radio Beasts By: Ralph Milne Farley

Radio Planet By: Ralph Milne Farley

Raid of Dover: A Romance of the Reign of Woman A.D. 1940 By: Douglas Morey Ford