| 1 | 9 | Worlds of if | 0 | | £2.00 | Philip K Dick – Robert Sheckley – Marks – Miller – Henderson – Klass |
| 1 | 7 | Worlds of if | 0 | | £2.50 | Rog Phillips – Walter Miller – Mari Wolf – Rory Magil – Robert Turner – Alfred Coppel – Lynn Venable – Roger Dee |
| 1 | 6 | Worlds of if | 0 | | £2.00 | Evan Hunter – Nourse – Harry Harrison – Gunn – Wilson – Damon Knight |
| 0 | 2 | Worlds of if | 1959 | | £2.00 | Rackham – EC Tubb – McIntosh – DeFord – ted Bain – Whitford – Sohl |
| 10 | 5 | Worlds of if | 1960 | 11 | £2.50 | Jim Harmon – Daniel Keyes – Lloyd Biggle – Robert Wicks – S F Grenville – RA Lafferty – W W Stuart – Frank Herbert |
| 15 | 9 | Worlds of if | 1965 | 09 | £2.00 | Frederik Pohl – Clayton McCarty – Keith Laumer – CC MacApp – Fritz Leiber – Richmond – Dannie Plachta – Edward E Smith – |
| 15 | 10 | Worlds of if | 1965 | 10 | £2.50 | (f) Laumer – Edward E Smith – Robert F Young – Gordon R Dickson – Mack Reynolds – deFord – Dong – Williams |
| 15 | 11 | Worlds of if | 1965 | 11 | £2.00 | (vg) Bulmer – G R Dickson – Saberhagen – Reynolds – McLaughlin – Laumer |
| 15 | 12 | Worlds of if | 1965 | 12 | £2.50 | (vg+) Heinlein – Laumer – Young – Pearce – Kyle – Goldin – McFadden – Bloch |
| 16 | 4 | Worlds of if | 1966 | 04 | £2.50 | Saberhagen – K Laumer – R G Brown – Robert A Heinlein – Alma Hill – Clayton McCarty – Garrett Brown |
| 16 | 7 | Worlds of if | 1966 | 05 | £2.50 | A A Walde – H H Hollis – James Blish – Laumer & Brown – R E Lory – Dannie Platcher |
| 16 | 8 | Worlds of if | 1966 | 06 | £2.50 | Williams – Scott – Blish – Clement – Michel – Jacobi |
| 16 | 6 | Worlds of if | 1966 | 06 | £2.50 | Piers Anthony – D M Melton – Christpher Anvil – K Laumer – R G Brown – Carol Eastern – Larry Nivan |
| 16 | 10 | Worlds of if | 1966 | 08 | £2.50 | Larry Nivan – J P Martino – Ernest Hill – Gordon R Dickson – JT McIntosh – A B Chandler – M Walker – R C Payes – |
| 16 | 12 | Worlds of if | 1966 | 10 | £2.50 | Budrys – Barrett – Niven – Shaw – McIntosh – Imboden – Offutt |
| 17 | 5 | Worlds of if | 1967 | 05 | £2.00 | (vg-) Carr – Runyon – Hollis – Laumer – Chandler – Filer |
| 17 | 6 | Worlds of if | 1967 | 06 | £2.00 | (vg) Amdre Norton – H L Morris – S R Delany – Keith Laumer – Sarberhagen – J B Lawson – S Elliott |
| 18 | 8 | Worlds of if | 1968 | 08 | £2.00 | (vg-) Piers Anthony – Chandler – Melton – Urhausan – Von Wold – Zelazny – Tritten – Pohl – Williamson |
| 18 | 9 | Worlds of if | 1968 | 09 | £2.00 | Hal Clement – Larry S Todd – Thomas J Bassler – Dean R Koontz – CC MacApp – Mark Renolds – Larry Niven |
| 18 | 10 | Worlds of if | 1968 | 10 | £2.00 | Samuel R Delany – Stirling Lanier – Harry Harrison – James Tiptree – Lohr Miller – Takumi Shibano |
| 18 | 11 | Worlds of if | 1968 | 11 | £2.00 | Kirsch – Reynolds – Zelazny – Schmitz – Blish – Price – Harness – |
| 18 | 12 | Worlds of if | 1968 | 12 | £2.50 | J F Grow – A B Chandler – Isaak Asimov – Bram Hall – J G Ballard – Harlan Ellison – Reynolds – |
| 19 | 1 | Worlds of if | 1969 | 01 | £2.00 | W F Temple – Lichenberg – Dean R Koontz – Zelazny – Mcintosh – |
| 19 | 2 | Worlds of if | 1969 | 02 | £2.50 | Burt Filer – Harry Harrison – Andrew J Offutt – RF Burlingame -J T McIntosh – |
| 19 | 3 | Worlds of if | 1969 | 03 | £2.50 | P Jose Farmer – Anne MaCaffrey – Ted White – Roger Zelazny – David Redd – Harlan Ellison – George Scithers – Fritz Leiber |
| 19 | 5 | Worlds of if | 1969 | 04 | £2.50 | Robert Bloch – MacApp – Robert Weinberg – Andre Norton – Perry Chapdelaine |
| 19 | 4 | Worlds of if | 1969 | 04 | £2.50 | Laumer – Norton – Chapdelaine – Wald – Mayer – Lee – Deeley |
| 19 | 8 | Worlds of if | 1969 | 11 | £2.00 | Frank Herbert – Piers Anthony – W MacFarlane – Perry Chapdelane – Keith Laumer – Barry Malzberg – Steven Guy Oliver |
| 19 | 9 | Worlds of if | 1969 | 12 | £2.00 | James Tiptree – Keith Laumer – Irwin Ross – B A Weissman – Alfred Coppel – Neal Barrett – T M treadway |
| 19 | 10 | Worlds of if | 1970 | 01 | £2.50 | (vg+)Gordon R Dickson – Keith Laumer – Nell Shapiro – Barry malzberg – Norman Spinrad – John Brunner – Glenn Chang – James E Gunn |
| 20 | 1 | Worlds of if | 1970 | 02 | £2.50 | Richard Wilson – James sallis – Galouye – Frank Herbert – Harry Harrison – Eisenberg |
| 20 | 2 | Worlds of if | 1970 | 03 | £2.50 | Bova – herbert – Eisenberg – Goulart – Drahan – Bass – meredith – Willick – pierce |
| 20 | 3 | Worlds of if | 1970 | 04 | £2.50 | Poul Anderson – Simak – Herbert – Bob Shaw – Brown – Ed Bryant – Jack Dann – Plachta – E Clayton McCarty – Basil Wells |
| 20 | 4 | Worlds of if | 1970 | 05 | £2.50 | Asimov – Harding – Frank Herbert – Young – Goulart – Lafferty – Gene Wolfe |
| 20 | 5 | Worlds of if | 1970 | 06 | £2.00 | Silverberg – Laumer -Davidson -Gerrold & Niven – Coney – Eisenberg – Tiptree – |
| 20 | 6 | Worlds of if | 1970 | 09 | £2.50 | Ernest Taves – David Gerrold & Larry Niven – Eisenberg – Joe Haideman – Piers Anthony – Lee Harding – Goulart – Barrett Zebrowski & Dann |
| 20 | 12 | Worlds of if | 1971 | 07 | £2.00 | (vg) Theodore Sturgeon – James A Gotaas – Philip Jose Farmer – Avram Davidson – R A Lafferty |
| 21 | 2 | Worlds of if | 1971 | 11 | £2.00 | Richard C meredith – CC MacApp – JT Mcintosh – Ed Bianchi – B Alan Burhoe – |
| 21 | 3 | Worlds of if | 1972 | 01 | £2.00 | Harry Harrison – Colin Kapp – Joe L Hensley – Doris Piserchia – David R Mason – |
| 21 | 4 | Worlds of if | 1972 | 03 | £2.00 | Harry Harrison – Colin Kapp – David Magil – David R Bunch – Robert Bloch – Isaac Asimov |
| 21 | 5 | Worlds of if | 1972 | 05 | £2.00 | (f) Greg Benford – Joseph Green – Colin Kapp David Magil – Lee Killough – J W Schutz |
| 21 | 6 | Worlds of if | 1972 | 07 | £2.50 | (f) Pohl – Hughes – Piserchia – Lunan – Anthony – Lee |
| 21 | 7 | Worlds of if | 1972 | 09 | £2.50 | (f) Tall – Hughes – Anthony – Foster – Franson – Eklund |
| 21 | 8 | Worlds of if | 1972 | 11 | £2.50 | (f) Robert L Davis – Piers Anthony – Colin Kapp – Robert F Young – David Magil – David Lewis – Larry Eisenberg – Doris Piserchia |
| 21 | 9 | Worlds of if | 1973 | 01 | £2.50 | (f) Michael Bishop – Michael G Coney – Colin Kapp – Clifford D Simak – Robert F Young |
| 21 | 10 | Worlds of if | 1973 | 03 | £2.00 | (vg+) Pohl & Williamson – Michael G Coney – Colin Kapp – David Magil – Edward Wellen |
| 21 | 11 | Worlds of if | 1973 | 05 | £2.00 | (f) Cifford D Simak – Bob Stickgold – Sydney J van Scyoc – Dean McLaughlin – Beverly Goldberg |
| 21 | 12 | Worlds of if | 1973 | 07 | £2.00 | (f) F M Busby – Stephen Tall Clifford D Simak – Chelsie Quinn Yarbro – David Magil – Gene Wolfe |
| 22 | 1 | Worlds of if | 1973 | 09 | £2.50 | (f) Robert Wells – William Lee – Lee Killough – FM Busby – Gene Kilczer – Larry Eisenberg – Stephen Tall |
| 22 | 2 | Worlds of if | 1973 | 11 | £2.00 | (f) Kenneth Von Gunden – Duncan Lunan – Ron Goulart – Susan Ellison – Anne McCaffrey – Robert Wells |
| 22 | 3 | Worlds of if | 1974 | 02 | £2.50 | (f) Brackett – Clement – Sargent – Spinrad – Priest – Eklund |
| 22 | 4 | Worlds of if | 1974 | 03 | £2.50 | (f) Schmitz – Jones – Wellen – Saberhagen – Yarbo – Roszell – Garrett – Isaacs – Brackett – del Rey |
| 22 | 5 | Worlds of if | 1974 | 05 | £2.50 | (f) Saberhagen – Asimov – Silverberg – Anvil – Schmitz – Reynolds – Watkins – Collins |
| 22 | 6 | Worlds of if | 1974 | 07 | £2.50 | (f) Leiber – Shaw – Sheldon – Hudson – Simov – Niven – Goodz – Edmundson – Saberhagen |
| 22 | 7 | Worlds of if | 1974 | 09 | £2.50 | (f) Anderson – Kapp – Darnay – Trenholm – White – Edelstein – Keith – Kimmel – |
