Experiments in Plant Hybridisation By: Gregor Mendel

The Repairman By: Harry Harrison

The World Beyond By: Ray Cummings

A Spaceship Named McGuire By: Randall Garrett

Beyond Lies the Wub & The Skull By: Philip K. Dick

A Problem in Modern Ethics By: John Addington Symonds

The Ambulance Made Two Trips By: Murray Leinster

The Mystic Will By: Charles Godfrey Leland (1824-1903)

The Judas Valley By: Robert Silverberg and Randall Garrett

Galaxy Primes By: E. E. Smith

Five Lectures on Blindness By: Kate M. Foley

Condition of the Working-Class in England in 1844 By: Friedrich Engels

Laws By: Plato

Temple Trouble By: H. Beam Piper

Chemical Phenomena in Life By: Frederick Czapek

Experiments and Observations on Different Kinds of Air By: Joseph Priestley

Young Girl's Diary By: Anonymous

Southern Horrors: Lynch Law In All Its Phases By: Ida B. Wells-Barnett

Republic (version 2) By: Plato (Πλάτων)

Gorgias By: Plato (Πλάτων)

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

Random Reminiscences of Men and Events By: John D. Rockefeller

Watchbird By: Robert Sheckley

Treatise on Light By: Christiaan Huygens

The World's Lumber Room By: Selina Gaye

Great Astronomers By: Robert Stawell Ball

Islands of Space By: John Wood Campbell. Jr.

Studies About Trees By: Jacob Joshua Levison

Time Crime By: H. Beam Piper

Danger! and Other Stories By: Sir Arthur Conan Doyle

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

Police Your Planet By: Lester del Rey

Raiders of the Universes By: Donald Wandrei

Extermination of the American Bison By: William T. Hornaday

The Prospective Mother By: J. Morris Slemons

Space Platform By: Murray Leinster

Auguste Comte and Positivism By: John Stuart Mill

Wild Animals I Have Known By: Ernest Thompson Seton

Martyrs of Science, or, the Lives of Galileo, Tycho Brahe, and Kepler By: David Brewster

Happy Unfortunate By: Robert Silverberg

Three Science Fiction Stories by Fritz Leiber By: Fritz Leiber

Naudsonce By: H. Beam Piper

Salvage in Space By: Jack Williamson

Airlords of Han By: Philip Francis Nowlan

Young Woman's Guide to Excellence By: William A Alcott

How to Succeed By: Orison Swett Marden

Sabotage in Space By: Carey Rockwell

Card Trick By: John Berryman

No Animal Food and Nutrition and Diet with Vegetable Recipes By: Rupert H. Wheldon

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

Chronicles of Canada Volume 32 - The Railway Builders: A Chronicle of Overland Highways By: Oscar D. Skelton

Among the Trees at Elmridge By: Ella Rodman Church

Tom Swift and His Sky Racer By: Victor Appleton

Unwise Child By: Randall Garrett

Fire People By: Ray Cummings

Food Guide for War Service at Home By: Frances Swain

Honeymoon in Space By: George Griffith

Wandl the Invader By: Ray Cummings

Equation of Doom By: Gerald Vance

Rip Foster Rides the Gray Planet By: Harold L. Goodwin