Is Anyone Out There?
Jack Stoneley & A. T. Lawton
Earth, Air, Fire and Water
Stephen Nemeth & William Walling
The Time-Traveller
Spider Robinson
Callahan (1)
The People of the Wind (Part 1 of 3)
Poul Anderson
Avalon (Technic Civilization) (1)
Analog Science Fiction - Science Fact 1972-08 v89n06
Analog
The Outposter (Part 3 of 3)
Gordon R. Dickson
The Outposter (Part 1 of 3)
The Tactics of Mistake (Part 3 of 4)
Childe Cycle (1)
Command Performance
Walter M. Miller, Jr.
It Takes a Thief
The Winged Man
A. E. Van Vogt