The Test, by Richard Matheson, from The Magazine of Fantasy and Science Fiction
Anachron, by Damon Knight, from Worlds Of if Science Fiction
Black Charlie, by Gordon R. Dickson, from Galaxy Science Fiction
Down Among the Dead Men, by William Tenn, from Galaxy Science Fiction
The Hunting Lodge, by Randall Garrett, from Astounding Science Fiction
The Lysenko Maze, by Donald A. Wollheim, from The Magazine of Fantasy and Science Fiction
Fondly Fahrenheit, by Alfred Bester, from The Magazine of Fantasy and Science Fiction
The Cold Equations, by Tom Godwin, from Astounding Science Fiction
Letters From Laura, by Mildred Clingerman, from The Magazine of Fantasy and Science Fiction
Transformer, by Chad Oliver, from The Magazine of Fantasy and Science Fiction
The Music Master of Babylon, by Edgar Pangborn, from Galaxy Science Fiction
The End of Summer, by Algis Budrys, from Astounding Science Fiction
The Father-Thing, by Philip K. Dick, from The Magazine of Fantasy and Science Fiction
The Deep Range, by Arthur C. Clarke, from Star Science Fiction Stories No. 4
Balaam, by Anthony Boucher, from 9 Tales of Space and Time
Man of Parts, by Horace L. Gold, from 9 Tales of Space and Time
Answer, by Frederic Brown