The Library

4170 public-domain science-fiction titles

4170 results

Cover of Infiltration by Algis Budrys

Algis Budrys · 1958

First ContactHorror

Infinite Intruder

Cover of Infinite Intruder by Alan Edward Nourse

Infinite Intruder

Alan Edward Nourse · 1953

Social SFTime Travel

Infinity's Child

Cover of Infinity's Child by Charles V. De Vet

Infinity's Child

Charles V. De Vet · 1952

Psychic PowersSocial SF

Cover of Inheritance by Edward W. Ludwig

Edward W. Ludwig · 1950

Post-ApocalypticPsychic Powers

Cover of Inhibition by James Causey

James Causey · 1955

First ContactSocial SF

Ini: Ein Roman aus dem ein und zwanzigsten Jahrhundert

Cover of Ini: Ein Roman aus dem ein und zwanzigsten Jahrhundert by Julius von Voss

Ini: Ein Roman aus dem ein und zwanzigsten Jahrhundert

Julius von Voss · 1810

3 hr 44 min read

Social SFUtopia

Innocent at Large

Cover of Innocent at Large by Poul Anderson Karen Anderson

Innocent at Large

Poul Anderson Karen Anderson · 1958

ColonizationSocial SF

Cover of Inside Earth by Poul Anderson

Poul Anderson · 1951

1 hr 9 min read

First ContactMilitary SF

Inside John Barth

Cover of Inside John Barth by William W. Stuart

Inside John Barth

William W. Stuart · 1960

DystopiaSocial SF

Cover of Insidekick by Jesse F. Bone

Jesse F. Bone · 1959

First ContactPsychic Powers

Instant of Decision

Cover of Instant of Decision by Randall Garrett

Instant of Decision

Randall Garrett · 1953

Social SFSpace Opera

Cover of Instinct by George O. Smith

George O. Smith · 1952

Hard SFSocial SF

Cover of Intermere by William Alexander Taylor

William Alexander Taylor · 1901

1 hr 19 min read

Lost WorldUtopia

Cover of Into the Sun by John L. Chapman

John L. Chapman · 1941

Hard SFSpace Opera

Into the fourth dimension

Cover of Into the fourth dimension by Ray Cummings

Into the fourth dimension

Ray Cummings · 1941

2 hr 27 min read

AdventureHard SF

Invader From Infinity

Cover of Invader From Infinity by George A. Whittington

Invader From Infinity

George A. Whittington · 1944

Military SFSpace Opera

Invaders from the Infinite

Cover of Invaders from the Infinite by Jr. John W. Campbell

Invaders from the Infinite

Jr. John W. Campbell · 1932

4 hr 2 min read

First ContactSpace Opera

Invaders of the Forbidden Moon

Cover of Invaders of the Forbidden Moon by Raymond Z. Gallun

Invaders of the Forbidden Moon

Raymond Z. Gallun · 1941

1 hr 5 min read

AdventureSpace Opera

Cover of Invasion by Murray Leinster

Murray Leinster · 1933

First ContactMilitary SF

Irresistible Weapon

Cover of Irresistible Weapon by H. B. Fyfe

Irresistible Weapon

H. B. Fyfe · 1953

Military SFPost-Apocalyptic

Is That You Xeluchli?

Cover of Is That You Xeluchli? by Dick Hetschel

Is That You Xeluchli?

Dick Hetschel · 1952

First ContactSpace Opera

Isabella von Ägypten: Kaiser Karl des Fünften erste Jugendliebe

Cover of Isabella von Ägypten: Kaiser Karl des Fünften erste Jugendliebe by Freiherr von Ludwig Achim Arnim

Isabella von Ägypten: Kaiser Karl des Fünften erste Jugendliebe

Freiherr von Ludwig Achim Arnim · 1812

2 hr 11 min read

Islands of Space

Cover of Islands of Space by Jr. John W. Campbell

Islands of Space

Jr. John W. Campbell · 1931

4 hr 16 min read

Hard SFSpace Opera

Isle of the Undead

Cover of Isle of the Undead by Lloyd Arthur Eshbach

Isle of the Undead

Lloyd Arthur Eshbach · 1936