If, Worlds of Science Fiction Year 1969 Magazine Back Issues
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- Worlds Of Tomorrow
- Praiseworthy Saur By Harry Harrison
- Trial By Fire By James E. Gunn
- And Many Other Stories And Features!
- Worlds Of Tomorrow
- Special Hugo Awards Issue
- If Voted World's Best SF Magazine For Third Straight Year
- Worlds Of Tomorrow
- Retief, The Long-Awaited Master By Keith Laumer
- The Toys Of Tamisen A New Science-Adventure Novel By Andre Norton
- If Voted World's Best SF Magazine For Third Straight Year
- Worlds Of Tomorrow
- Mad Ship By C.C. MacApp
- Groovyland By Robert Bloch
- A Brand New Andre Norton Novel And Many More
- The Half Men By Keith Laumer
- The Towns Must Roll
- By Mack Reynolds
- Star Seeder By T. J. Bass
- Brood World Barbarian By Perry A. Chapdelaine
- The Last True God By Philip St. John
- New Science Fiction At Its Best
- Starting Keith Laumer's Big Serial The Seeds Of Gonyl
- The Mind Bomb A Novelette By Frank Herbert
- The First Traces Of Life Willy Ley
- Happiness Is A Warm Spaceship James Tiptree, Jr.
- Every Male Aboard Had A Minority Problem
- A Race Problem - And The Same Damn Girl Problem!
- To Kill A World Irwin Ross Genemaster Barry Weissman
- Gordon Dickson's Startling New Novella Of Inner Space Aliens Ancient, My Enemy
- What Time Was That? Barry Malzberg
- The New Thing John Brunner
- Norman Spinrad Keith Laumer Glenn Chang Del Rey
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If was an American science fiction magazine launched in March 1952 by Quinn Publications, owned by James L. Quinn.
The magazine was moderately successful, though for most of its run it was not considered to be in the first tier of American science fiction magazines. It achieved its greatest success under editor Frederik Pohl, winning the Hugo Award for best professional magazine three years running from 1966 to 1968. If published many award-winning stories over its 22 years, including Robert A. Heinlein's novel The Moon Is a Harsh Mistress and Harlan Ellison's short story "I Have No Mouth and I Must Scream". The most prominent writer to make his first sale to If was Larry Niven, whose story "The Coldest Place" appeared in the December 1964 issue.
If was merged into Galaxy Science Fiction after the December 1974 issue, its 175th issue overall.
