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

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

The Hills of Home By: Alfred Coppel

Martians Never Die By: Lucius Daniel

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

Wandl the Invader By: Ray Cummings

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

Song in a Minor Key By: Catherine L. Moore

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

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

An Ounce of Cure By: Alan Edward Nourse

The Man Who Hated Mars By: Randall Garrett

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