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

Salvage in Space By: Jack Williamson

The Keeper By: H. Beam Piper

The Affair of the Brains By: Anthony Gilmore

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

Ten British Mathematicians By: Alexander Macfarlane

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

The Genus Pinus By: George Russell Shaw

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

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

Airlords of Han By: Philip Francis Nowlan

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

More Letters of Charles Darwin By: Charles Darwin

In Darkest England and the Way Out By: William Booth

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

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

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

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

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

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

McIlvaine's Star By: August William Derleth

Explanation of Terms Used in Entomology By: John Bernhard Smith

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

How to Succeed By: Orison Swett Marden

Sabotage in Space By: Carey Rockwell

Advanced Chemistry By: Jack G. Huekels

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

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

Card Trick By: John Berryman

Common Science By: Carleton Washburne

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

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

The Impossibles By: Randall Garrett

The Hunted Heroes By: Robert Silverberg

Alarm Clock By: Everett B. Cole

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

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

On the Significance of Science and Art By: Leo Tolstoy

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

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

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

Gone Fishing By: James H. Schmitz

I'm a Stranger Here Myself By: Mack Reynolds

Am I Still There? By: James R. Hall

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

The Fibonacci Number Series By: Michael Husted

Operation Earthworm By: Joe Archibald

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

Ullr Uprising By: H. Beam Piper

Death Wish By: Robert Sheckley

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