Retrospective anthology; most works have a forward by the story's author. Introduction by Frederik Pohl; As IF Was in the Beginning by Larry T. Shaw; The Golden Man (1954) by Philip K. Dick; The Battle (1954) by Robert Sheckley; Last Rites (1955) by Charles Beaumont; Game Preserve (1957) by Rog Phillips; The Burning of the Brain (1958) by Cordwainer Smith; The Man Who Tasted Ashes (1959) by Algis Budrys; Kings Who Die (1962) by Poul Anderson; Fortress Ship [Berserker] (1963) by Fred Saberhagen; Father of the Stars (1964) by Frederik Pohl; Trick or Treaty [Retief] (1965) by Keith Laumer; Nine Hundred Grandmothers (1966) by R. A. Lafferty; Neutron Star [Known Space] (1966) by Larry Niven; This Mortal Mountain (1967) by Roger Zelazny; I Have No Mouth, and I Must Scream (1967) by Harlan Ellison; Driftglass (1967) by Samuel R. Delany; The Holmes-Ginsbook Device (1968) by Isaac Asimov; Down in the Black Gang (1969) by Philip José Farmer; The Reality Trip (1970) by Robert Silverberg; The Nightblooming Saurian (1970) by James Tiptree, Jr.; Occam's Scalpel (1971) by Theodore Sturgeon; Construction Shack (1973) by Clifford D. Simak; Time Deer (1974) by Craig Strete; Flash Point, Middle by Barry N. Malzberg.
Martin Harry Greenberg was an American academic and speculative fiction anthologist. In all, he compiled 1,298 anthologies and commissioned over 8,200 original short stories. He founded Tekno Books, a packager of more than 2000 published books. In addition, he was a co-founder of the Sci-Fi Channel.
For the 1950s anthologist and publisher of Gnome Press, see Martin Greenberg.
I dont know; I guess I'm just not enjoying science fiction as much as I used to. These are excellent stories by great science fiction writers, but there was nothing in here that grabbed me, nothing that made me want to keep reading. Sorry, Worlds of If. It's not you. It's me.