33 original stories, edited by Harlan Ellison, including 7 Hugo and Nebula Award winners and 13 nominees.

Volume 1
Evensong, Lester del Rey
Flies, Robert Silverberg
The Day After The Martians Came, Frederik Pohl
Riders of the Purple Wage or The Great Gavage, Philip Jose Farmer, 1968 Novella Hugo Award Winner & Nebula Award Nominee
The Malley System, Miriam Allen deFord
A Toy for Juliette, Robert Bloch
The Prowler in the City at the Edge of the World, Harlan Ellison
The Night that all Time Broke Out, Brian W. Aldiss

Volume Two
The Man Who went to the Moon - Twice, Howard Rodman
Faith of Our Fathers, Philip K. Dick, 1968 Novelette Hugo Award Nominee
The Jigsaw Man, Larry Niven, 1968 Short Story Hugo Award Nominee
Gonna Roll the Bones, Fritz Leiber, 1968 Novelette Hugo & Nebula Award Winner
Lord Randy, My Son, Joe L. Hensley
Eutopia, Poul Anderson
Incident in Moderan, David R. Bunch
The Doll-house, James Cross
Sex and/or Mr. Morrison, Carol Emshwiller
Shall the Dust Praise Thee?, Damon Knight
If all Men Were Brothers, Would You Let One Marry Your Sister?, Theodore Sturgeon, 1968 Novella Nebula Award Nominee
What Happened to Auguste Clarot?, Larry Eisenberg

Volume Three
Ersatz, Henry Slesar
Go, Go, Go, Said the Bird, Sonya Dorman
The Happy Breed, John T. Sladek
Encounter with a Hick, Jonathan Brand
From the Government Printing Office, Kris Neville
Land of the Great Horses, R. A. Lafferty
The Recognition, J. G. Ballard
Judas, John Brunner
Test to Destruction, Keith Laumer
Carcinoma Angels, Norman Spinrad
Auto-Da-Fe, Roger Zelazny
Aye, and Gomorrah..., Samuel R. Delany, 1968  Short Story Hugo Award Nominee, & Nebula Award Winner

SF Masterworks #100