Dearest By: H. Beam Piper

Women As Sex Vendors or, Why Women Are Conservative (Being a View of the Economic Status of Woman) By: R. B. (Roscoe Burdette) Tobias

The Lani People By: Jesse F. Bone

Tom Swift and His Sky Racer By: Victor Appleton

Trees of the Northern United States Their Study, Description and Determination By: A. C. (Austin Craig) Apgar

Unwise Child By: Randall Garrett

The Blue Tower By: Evelyn E. Smith

The Nothing Equation By: Tom Godwin

Fat and Blood An Essay on the Treatment of Certain Forms of Neurasthenia and Hysteria By: S. Weir Mitchell

The Number Concept Its Origin and Development By: Levi L. (Levi Leonard) Conant

Love—Marriage—Birth Control Being a Speech delivered at the Church Congress at Birmingham, October, 1921 By: Bertrand Edward Dawson Dawson

Social Life in the Insect World By: Jean-Henri Fabre

The American Journal of Archaeology, 1893-1 By: Various

Derelict By: Alan Edward Nourse

The Discovery of a World in the Moone Or, A Discovrse Tending To Prove That 'Tis Probable There May Be Another Habitable World In That Planet By: John Wilkins

Cry from a Far Planet By: Tom Godwin

The Number "e" By: Unknown

John Jones's Dollar By: Harry Stephen Keeler

On Some Fossil Remains of Man By: Thomas Henry Huxley

The Healthy Life, Vol. V, Nos. 24-28 The Independent Health Magazine By: Various

Insectivorous Plants By: Charles Darwin

The Invaders By: Benjamin Ferris

The Ultimate Experiment By: Thornton DeKy

Theologico-Political Treatise — Part 4 By: Benedictus de Spinoza

The Einstein See-Saw By: Miles John Breuer

Pleasures of the telescope An Illustrated Guide for Amateur Astronomers and a Popular Description of the Chief Wonders of the Heavens for General Readers By: Garrett Putman Serviss

The Beauties of Nature and the Wonders of the World We Live In By: John Lubbock

Life and Letters of Charles Darwin By: Charles Darwin

Creatures of the Night A Book of Wild Life in Western Britain By: Alfred Wellesley Rees

Civics and Health By: William H. (WIlliam Harvey) Allen

The Bird Book Illustrating in natural colors more than seven hundred North American birds; also several hundred photographs of their nests and eggs. By: Chester A. (Chester Albert) Reed

Danger! A True History of a Great City's Wiles and Temptations The Veil Lifted, and Light Thrown on Crime and its Causes, and Criminals and their Haunts. Facts and Disclosures. By: Abraham H. Hummel

The Helpful Robots By: Robert Shea

The End of Time By: Wallace West

An Introductory Course of Quantitative Chemical Analysis With Explanatory Notes By: Henry P. Talbot

The Bluff of the Hawk By: Anthony Gilmore

The 4-D Doodler By: Graph Waldeyer

...After a Few Words... By: Randall Garrett

New and Original Theories of the Great Physical Forces By: Henry Raymond Rogers

The Auburndale Watch Company First American Attempt Toward the Dollar Watch By: Edwin A. Battison

The Worshippers By: Damon Francis Knight

Tight Squeeze By: Dean Charles Ing

Out of This World Convention By: Forrest J. Ackerman

Conversations on Chemistry, V. 1-2 In Which the Elements of that Science Are Familiarly Explained and Illustrated by Experiments By: Mrs. (Jane Haldimand) Marcet

Theologico-Political Treatise — Part 2 By: Benedictus de Spinoza

Lectures on Land Warfare; A tactical Manual for the Use of Infantry Officers By: Anonymous

The Positive School of Criminology Three Lectures Given at the University of Naples, Italy on April 22, 23 and 24, 1901 By: Enrico Ferri

When the World Shook; being an account of the great adventure of Bastin, Bickley and Arbuthnot By: Henry Rider Haggard

Psichopath By: Randall Garrett

The Power of Movement in Plants By: Francis Darwin

Death of a Spaceman By: Walter M. Miller

Acid Bath By: Bill Garson

Getting Acquainted with the Trees By: J. Horace (John Horace) McFarland

The Quantum Jump By: Robert Wicks

Stories about Animals: with Pictures to Match By: Francis C. Woodworth

Drawings and Pharmacy in Al-Zahrawi's 10th-Century Surgical Treatise By: Sami Khalaf Hamarneh

Scrimshaw By: Murray Leinster

Dogfight—1973 By: Mack Reynolds

Morale A Story of the War of 1941-43 By: Murray Leinster

Myths and Marvels of Astronomy By: Richard A. Proctor

The Botanical Magazine, Vol. 5 Or, Flower-Garden Displayed By: William Curtis

Mother Earth Land Grants in Virginia 1607-1699 By: Walter Stitt Robinson

Modus Vivendi By: John Berryman

The Starvation Treatment of Diabetes By: Lewis Webb Hill

Criminal Sociology By: Enrico Ferri

The Pygmy Planet By: Jack Williamson

The Aggravation of Elmer By: Robert Arthur

The Man from Time By: Frank Belknap Long

The Story of Germ Life By: Herbert W. Conn

Droozle By: Frank Banta

Pandemic By: Jesse F. Bone

The Mind Master By: Arthur J. Burks

Policing the Plains Being the Real-Life Record of the Famous North-West Mounted Police By: R. G. (Roderick George) MacBeth

Alien Offer By: Al Sevcik

Essays Towards a Theory of Knowledge By: Alexander Philip

The Code of Honor, Or, Rules for the Government of Principals and Seconds in Duelling By: John Lyde Wilson

The Naturalist on the River Amazons By: Henry Walter Bates

The Natural History of Selborne, Vol. 1 By: Gilbert White

Fire People By: Ray Cummings

The Best Made Plans By: Everett B. Cole

The Invaders By: Murray Leinster

Philosophical Transactions of the Royal Society - Vol 1 - 1666 Giving some Accompt of the present Undertakings, Studies, and Labours of the Ingenious in many considerable parts of the World By: Various

Theologico-Political Treatise — Part 3 By: Benedictus de Spinoza

Almost A Man By: Mary Wood-Allen

A Question of Courage By: Jesse F. Bone

Astronomy of To-day A Popular Introduction in Non-Technical Language By: Cecil Goodrich Julius Dolmage

Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 By: Gary N. (Gary Nathan) Calkins

Lost in Translation By: Laurence M. Janifer

Every Girl's Book By: George Frank Butler

The Woman Beautiful or, The Art of Beauty Culture By: Helen Follett Jameson

The Untouchable By: Stephen A. Kallis

Bear Trap By: Alan Edward Nourse

Valerius Terminus; of the interpretation of nature By: Francis Bacon

Biographies of Distinguished Scientific Men First Series By: François Arago

Birds of the Rockies By: Leander S. Keyser

Project Trinity 1945-1946 By: Steve Rohrer

Fifty Years of Railway Life in England, Scotland and Ireland By: Joseph Tatlow

The Western World Picturesque Sketches of Nature and Natural History in North and South America By: William Henry Giles Kingston

First Book in Physiology and Hygiene By: John Harvey Kellogg

It's a Small Solar System By: Allan Howard