Wandl the Invader By: Ray Cummings

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

Equation of Doom By: Gerald Vance

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

Combat By: Mack Reynolds

Games By: Katherine MacLean

Status Quo By: Dallas McCord Reynolds

Indirection By: Everett B. Cole

Song in a Minor Key By: Catherine L. Moore

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

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

London's Underworld By: Thomas Holmes

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

Code Three By: Rick Raphael

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

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

The Common Man By: Mack Reynolds

Service with a Smile By: Charles Louis Fontenay

Lords of the Stratosphere By: Arthur J. Burks

Crime and Its Causes By: William Douglas Morrison

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

Watch the Sky By: James H. Schmitz

The Big Fix By: George O. Smith

My Studio Neighbors By: W. Hamilton Gibson

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

Flight Through Tomorrow By: Stanton Arthur Coblentz

The Carnivore By: Katherine MacLean

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

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

The Jupiter Weapon By: Charles Louis Fontenay

The Chamber of Life By: Green Peyton

The Plague By: Teddy Keller