If, Worlds of Science Fiction Year 1970 Magazine Back Issues
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- Frank Herbert's Great New Serial Whipping Star
- O Kind Master Daniel F. Galouye
- Robert Bloch Covers The 1969 World Science Fiction Convention
- A Game Of Biochess T. J. Bass
- A Matter Of Recordings Larry Eisenberg
- Dry Run J. R. Pierce
- Frank Herbert - Lebster Del Rey - George Willick
- Of War And The Moon SOS Poul Anderson
- The Thing In The Stone Clifford Simak
- Telemart Three Bab Shaw
- Isaac Asimov Waterclap
- A Novelette Of Man's Ultimate Choice
- Ride A Tin Can R.A. Lafferty
- To Touch A Star Robert F. Young
- Novelette The Piecemakers Keith Laumer
- The Reality Trip Robert Silverberg
- Zon Avram Davidson
- Troubleshooter Michael G. Coney
- Second-Hand Stonehenge Ernest Taves
- Time Piece Joe Haldeman
- The Fifth Planet Larry Eisenberg
- Complete Novel Fimbulsommer Randall Garrett And Michael Kurland
- Ballots And Bandits Keith Laumer
- Life Cycle Jack Sharkey
- The Seventh Man George C. Chesbro
- Big New Retief Novel Complete In This Issue!
- The All-Together Planet Keith Laumer
- Abyss Of Tartarus Robert F. Young
- The Stainless Steel Rat Saves The World Harry Harrison
- Nebishes Threaten Again In Song Of Kaia
- Complete Novel In This Issue T.J. Bass
- The Last Time Around Arthur Sellings
- Monard A Dr. Dillingham Story Piers Anthony
19521953195419551956195719581959196019611962196319641965196619671968196919701971197219731974
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.
