The Helpful Robots By: Robert Shea

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

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

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

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

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

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

The Bluff of the Hawk By: Anthony Gilmore

The End of Time By: Wallace West

The 4-D Doodler By: Graph Waldeyer

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

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

Out of This World Convention By: Forrest J. Ackerman

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

No Pets Allowed By: M. A. (Monette A.) Cummings

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

Tight Squeeze By: Dean Charles Ing

The Worshippers By: Damon Francis Knight

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

The Power of Movement in Plants By: Francis Darwin

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

Psichopath By: Randall Garrett

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

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

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

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

The Quantum Jump By: Robert Wicks

Acid Bath By: Bill Garson

Death of a Spaceman By: Walter M. Miller

Criminal Sociology By: Enrico Ferri

Myths and Marvels of Astronomy By: Richard A. Proctor

The Starvation Treatment of Diabetes By: Lewis Webb Hill

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

Modus Vivendi By: John Berryman

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

Scrimshaw By: Murray Leinster

Dogfight—1973 By: Mack Reynolds

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

The Pygmy Planet By: Jack Williamson

The Man from Time By: Frank Belknap Long

The Cuckoo Clock By: Wesley Barefoot

The Aggravation of Elmer By: Robert Arthur

Alien Offer By: Al Sevcik

The Story of Germ Life By: Herbert W. Conn

Pandemic By: Jesse F. Bone

The Mind Master By: Arthur J. Burks

Droozle By: Frank Banta

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

The Naturalist on the River Amazons By: Henry Walter Bates

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

The Invaders By: Murray Leinster

Fire People By: Ray Cummings

Essays Towards a Theory of Knowledge By: Alexander Philip

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

The Best Made Plans By: Everett B. Cole

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

A Question of Courage By: Jesse F. Bone

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

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

Almost A Man By: Mary Wood-Allen

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

Bear Trap By: Alan Edward Nourse

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

The Untouchable By: Stephen A. Kallis

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

Birds of the Rockies By: Leander S. Keyser

Biographies of Distinguished Scientific Men First Series By: François Arago

Project Trinity 1945-1946 By: Steve Rohrer

Every Girl's Book By: George Frank Butler

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

It's a Small Solar System By: Allan Howard

First Book in Physiology and Hygiene By: John Harvey Kellogg

The Gay Rebellion By: Robert W. Chambers

Belly Laugh By: Randall Garrett

Gilbertus Anglicus Medicine of the Thirteenth Century By: Henry Ebenezer Handerson

The Medallic History of the United States of America 1776-1876 By: J. F. (Joseph Florimond) Loubat

Weak on Square Roots By: Russell Burton

On the Relations of Man to the Lower Animals By: Thomas Henry Huxley

The Helpful Hand of God By: Tom Godwin

Food Guide for War Service at Home By: Frances Swain

The Great Dome on Mercury By: Arthur Leo Zagat

The Leader By: Murray Leinster

Jerome Cardan A Biographical Study By: W. G. (William George) Waters

Honeymoon in Space By: George Griffith

The Big Bounce By: Walter S. Tevis

The Mississippi Saucer By: Frank Belknap Long

Final Weapon By: Everett B. Cole

Drug Supplies in the American Revolution By: George B. Griffenhagen

Self Mastery Through Conscious Autosuggestion By: Emile Coué

Alcohol: A Dangerous and Unnecessary Medicine, How and Why What Medical Writers Say By: Martha Meir Allen

Flowers and Flower-Gardens With an Appendix of Practical Instructions and Useful Information Respecting the Anglo-Indian Flower-Garden By: David Lester Richardson

The Open Air By: Richard Jefferies

Warning from the Stars By: Ron Cocking

The Star Hyacinths By: James H. Schmitz

The Other Likeness By: James H. Schmitz

Obed Hussey Who, of All Inventors, Made Bread Cheap By: Follett L. (Follett Lamberton) Greeno

No Moving Parts By: Murray F. Yaco

The Good Neighbors By: Edgar Pangborn