In Search of the Unknown By: Robert W. Chambers

Weak on Square Roots By: Russell Burton

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

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

Belly Laugh By: Randall Garrett

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

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

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

The Big Bounce By: Walter S. Tevis

Honeymoon in Space By: George Griffith

The Mississippi Saucer By: Frank Belknap Long

Final Weapon By: Everett B. Cole

The Star Hyacinths By: James H. Schmitz

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

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

Warning from the Stars By: Ron Cocking

The Other Likeness By: James H. Schmitz

Self Mastery Through Conscious Autosuggestion By: Emile Coué

Adaptation By: Mack Reynolds

The Open Air By: Richard Jefferies

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

No Moving Parts By: Murray F. Yaco

The Fourth "R" By: George O. Smith

A Matter of Importance By: Murray Leinster

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

Fifty Per Cent Prophet By: Randall Garrett

The Good Neighbors By: Edgar Pangborn

The Postage Stamp in War By: Frederick John Melville

Wild Animals at Home By: Ernest Thompson Seton

Yeast By: Thomas Henry Huxley

The Stamps of Canada By: Bertram W. H. (Bertram William Henry) Poole

Vigorish By: John Berryman

When the Sleepers Woke By: Arthur Leo Zagat

The Chemistry, Properties and Tests of Precious Stones By: John Mastin

The Hills of Home By: Alfred Coppel

Martians Never Die By: Lucius Daniel

Contributions to the Theory of Natural Selection A Series of Essays By: Alfred Russel Wallace

Combat By: Mack Reynolds

The Botanical Magazine, Vol. 6 Or, Flower-Garden Displayed By: William Curtis

Equation of Doom By: Gerald Vance

Games By: Katherine MacLean

Wandl the Invader By: Ray Cummings

Status Quo By: Dallas McCord Reynolds

London's Underworld By: Thomas Holmes

Physics and Politics, or, Thoughts on the application of the principles of "natural selection" and "inheritance" to political society By: Walter Bagehot

Indirection By: Everett B. Cole

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

Song in a Minor Key By: Catherine L. Moore

The Man Who Hated Mars By: Randall Garrett

An Ounce of Cure By: Alan Edward Nourse

The Evolution of Modern Capitalism A Study of Machine Production By: John A. Hobson

History of the Division of Medical Sciences United States National Museum Bulletin 240, Contributions from the Museum of History and Technology, paper 43, 1964 By: Sami Khalaf Hamarneh

Service with a Smile By: Charles Louis Fontenay

Lords of the Stratosphere By: Arthur J. Burks

The Common Man By: Mack Reynolds

Herself Talks with Women Concerning Themselves By: Edith B. Lowry

Code Three By: Rick Raphael

Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1 By: Alexander von Humboldt

Watch the Sky By: James H. Schmitz

The Story of the Cambrian A Biography of a Railway By: C. P. (Charles Penrhyn) Gasquoine

The Big Fix By: George O. Smith

Damned If You Don't By: Randall Garrett

Crime and Its Causes By: William Douglas Morrison

My Studio Neighbors By: W. Hamilton Gibson

Fighting the Traffic in Young Girls or, War on the White Slave Trade By: Ernest A. (Ernest Albert) Bell

There is a Reaper ... By: Charles V. De Vet

From a Girl's Point of View By: Lilian Bell

Flight Through Tomorrow By: Stanton Arthur Coblentz

The Jupiter Weapon By: Charles Louis Fontenay

The Chamber of Life By: Green Peyton

The Carnivore By: Katherine MacLean

Volcanic Islands By: Charles Darwin

The Plague By: Teddy Keller

The Last Place on Earth By: Jim Harmon

Life History of the Kangaroo Rat By: Walter P. (Walter Penn) Taylor

The No Breakfast Plan and the Fasting-Cure By: Edward Hooker Dewey

The Monster By: S. M. Tenneshaw

The White Invaders By: Ray Cummings

Disputed Handwriting By: Jerome Buell Lavay

Ways of Wood Folk By: William Joseph Long

As Long As You Wish By: John O'Keefe

The Works of the Right Honourable Edmund Burke, Vol. 09 (of 12) By: Edmund Burke

The Minds and Manners of Wild Animals A Book of Personal Observations By: William Temple Hornaday

Essays: Scientific, Political, & Speculative, Vol. I By: Herbert Spencer

An Essay on the Shaking Palsy By: James Parkinson

Border, Breed Nor Birth By: Mack Reynolds

Stammering, Its Cause and Cure By: Benjamin Nathaniel Bogue

Religion and Lust or, The Psychical Correlation of Religious Emotion and Sexual Desire By: James Weir

Freedom By: Mack Reynolds

Highways in Hiding By: George O. Smith

The Barbarians By: Algis Budrys

That Sweet Little Old Lady By: Randall Garrett

The Mysterious Murder of Pearl Bryan or: the Headless Horror. By: Unknown

Cat and Mouse By: Ralph Williams

Nerves and Common Sense By: Annie Payson Call

Cum Grano Salis By: Randall Garrett

Researches on Cellulose 1895-1900 By: C. F. (Charles Frederick) Cross