Evolution in Modern Thought By: August Weismann

The Earliest Arithmetics in English By: Joannes de Sacro Bosco

Youth and Sex By: F. Arthur Sibly

The Production of Vinegar from Honey By: Gerard W. Bancks

Cost of Living By: Robert Sheckley

Stamp Collecting as a Pastime By: Edward J. (Edward James) Nankivell

The Adventurer By: C. M. Kornbluth

Sane Sex Life and Sane Sex Living Some Things That All Sane People Ought to Know About Sex Nature and Sex Functioning; Its Place in the Economy of Life, Its Proper Training and Righteous Exercise By: H. W. (Harland William) Long

The Day Time Stopped Moving By: Bradner Buckner

A Manual of the Operations of Surgery For the Use of Senior Students, House Surgeons, and Junior Practitioners By: Joseph Bell

A Discourse of a Method for the Well Guiding of Reason and the Discovery of Truth in the Sciences By: René Descartes

The Stoker and the Stars By: Algis Budrys

The Women of the Arabs By: Henry Harris Jessup

The Lost Continent By: Charles John Cutcliffe Wright Hyne

Emergency Childbirth A Reference Guide for Students of the Medical Self-help Training Course, Lesson No. 11 By: United States. Office of Civil Defense

The Mathematicall Praeface to Elements of Geometrie of Euclid of Megara By: John Dee

Thomas Henry Huxley; A Sketch Of His Life And Work By: P. Chalmers (Peter Chalmers) Mitchell

The Builders A Story and Study of Masonry By: Joseph Fort Newton

Doctor and Patient By: S. Weir Mitchell

What is Darwinism? By: Charles Hodge

Salvage in Space By: Jack Williamson

The Keeper By: H. Beam Piper

Sir William Herschel: His Life and Works By: Edward Singleton Holden

The Affair of the Brains By: Anthony Gilmore

The Cosmic Express By: Jack Williamson

Airlords of Han By: Philip Francis Nowlan

The Children's Book of Stars By: G. E. Mitton

The Man-Made World; or, Our Androcentric Culture By: Charlotte Perkins Gilman

Ten British Mathematicians By: Alexander Macfarlane

The Genus Pinus By: George Russell Shaw

An Elementary Course in Synthetic Projective Geometry By: Derrick Norman Lehmer

Fragments of science, V. 1-2 By: John Tyndall

In Darkest England and the Way Out By: William Booth

Beyond the Vanishing Point By: Ray Cummings

The Ten Pleasures of Marriage and the Second Part, The Confession of the New Married Couple By: A. Marsh

More Letters of Charles Darwin By: Charles Darwin

Handbook of the Trees of New England By: Lorin Low Dame

Wild Flowers An Aid to Knowledge of Our Wild Flowers By: Neltje Blanchan

Aether and Gravitation By: William George Hooper

The Yillian Way By: Keith Laumer

Three Thousand Years of Mental Healing By: George Barton Cutten

The Hammer of Thor By: Charles Willard Diffin

Half-hours with the Telescope Being a Popular Guide to the Use of the Telescope as a Means of Amusement and Instruction. By: Richard A. Proctor

Invasion By: Murray Leinster

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

Food Remedies Facts About Foods And Their Medicinal Uses By: Florence Daniel

Explanation of Terms Used in Entomology By: John Bernhard Smith

McIlvaine's Star By: August William Derleth

Conestoga Wagons in Braddock's Campaign, 1755 By: Donald H. Berkebile

How to Succeed By: Orison Swett Marden

Bread Overhead By: Fritz Leiber

The formation of vegetable mould through the action of worms, with observations on their habits By: Charles Darwin

And All the Earth a Grave By: C. C. MacApp

Sabotage in Space By: Carey Rockwell

Evidence as to Man's Place in Nature By: Thomas Henry Huxley

Essentials of Diseases of the Skin Including the Syphilodermata Arranged in the Form of Questions and Answers Prepared Especially for Students of Medicine By: Henry Weightman Stelwagon

Advanced Chemistry By: Jack G. Huekels

Card Trick By: John Berryman

The Inheritors By: Ford Madox Ford

Of Natural and Supernatural Things Also of the first Tincture, Root, and Spirit of Metals and Minerals, how the same are Conceived, Generated, Brought forth, Changed, and Augmented. By: Basilius Valentinus

Half-Hours with the Stars A Plain and Easy Guide to the Knowledge of the Constellations By: Richard A. Proctor

Common Science By: Carleton Washburne

The Impossibles By: Randall Garrett

Operation R.S.V.P. By: H. Beam Piper

The Hunted Heroes By: Robert Silverberg

Alarm Clock By: Everett B. Cole

Form and Function A Contribution to the History of Animal Morphology By: E. S. (Edward Stuart) Russell

On the Significance of Science and Art By: Leo Tolstoy

The Romance of Mathematics Being the Original Researches of a Lady Professor of GirthamCollege in Polemical Science By: P. Hampson

We Didn't Do Anything Wrong, Hardly By: Roger Kuykendall

Gone Fishing By: James H. Schmitz

Practical Taxidermy A manual of instruction By: Montagu Browne

Manhood Perfectly Restored Prof. Jean Civiale's Soluble Urethral Crayons as a Quick, Painless, and Certain Cure for Impotence, Etc. By: Civiale Remedial Agency

I'm a Stranger Here Myself By: Mack Reynolds

Outlines of Dairy Bacteriology, 8th edition A Concise Manual for the Use of Students in Dairying By: H. L. (Harry Luman) Russell

Am I Still There? By: James R. Hall

Operation Earthworm By: Joe Archibald

The Fibonacci Number Series By: Michael Husted

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

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

The Botanical Magazine, Vol. 2 or Flower-Garden Displayed By: William Curtis

Ullr Uprising By: H. Beam Piper

Death Wish By: Robert Sheckley

The Hour of Battle By: Robert Sheckley

The Leech By: Robert Sheckley

Notes on Nursing What It Is, and What It Is Not By: Florence Nightingale

The Risk Profession By: Donald E. Westlake

The Mathematicians By: Arthur Feldman

A Popular History of Astronomy During the Nineteenth Century Fourth Edition By: Agnes M. (Agnes Mary) Clerke

ABC's of Science By: Charles A. (Charles Alexander) Oliver

A History of Science By: Henry Smith Williams

Valley of Dreams By: Stanley Grauman Weinbaum

Other Worlds Their Nature, Possibilities and Habitability in the Light of the Latest Discoveries By: Garrett Putman Serviss

Trinity site By: National Atomic Museum (U.S.)

Dead World By: Jack Douglas

The Mother and Her Child By: Lena K. (Lena Kellogg) Sadler

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

Sketches of the Natural History of Ceylon By: James Emerson Tennent

The Battle with the Slum By: Jacob A. Riis

Miscellaneous Mathematical Constants By: Simon Plouffe