Worlds of If Science Fiction #85

Frederik Pohl with Robert F. Young (Contributor), Larry Niven (Contributor), J. T. McIntosh (Contributor), R. A. Lafferty (Contributor), Keith Laumer (Contributor)

Worlds of If Science Fiction #91

Frederik Pohl with E. E. Smith (Contributor), Lawrence S. Todd (Contributor), Christopher Anvil (Contributor), Basil Wells (Contributor), C. C. MacApp (Contributor)

Worlds of If Science Fiction #97

Frederik Pohl with Robert Heinlein (Contributor), Gerald Pearce (Contributor), David Kyle (Contributor), Robert F. Young (Contributor), Stephen Goldin (Contributor), J. M. McFadden (Contributor), Keith Laumer (Contributor)

Worlds of If Science Fiction #101

Frederik Pohl with Keith Laumer (Contributor), Rosel George Brown (Contributor), Alma Hill (Contributor), Fred Saberhagen (Contributor), E. Clayton McCarty (Contributor), Garrett Brown (Contributor), Robert Heinlein (Contributor)

Worlds of If Science Fiction #125

Frederik Pohl with Robert Silverberg (Contributor), Jerry Juhl (Contributor), A. Bertram Chandler (Contributor), John Brunner (Contributor), Larry Niven (Contributor)

Worlds of If Science Fiction #144

Ejler Jakobsson with Frank Herbert (Contributor), Harry Harrison (Contributor), Richard Wilson (Contributor), Larry Eisenberg (Contributor), James Sallis (Contributor), Daniel F. Galouye (Contributor)

Worlds of If Science Fiction #161

Eljer Jakobsson with Zach Hughes (Contributor), Doris Piserchia (Contributor), Frederik Pohl (Contributor), Duncan Lunan (Contributor), Piers Anthony (Contributor), William Lee (Contributor)

Worlds of If Science Fiction #170

Eljer Jakobsson with Leigh Brackett (Contributor), Hal Clement (Contributor), Pamela Sargent (Contributor), Norman Spinrad (Contributor), Christopher Priest (Contributor), Gordon Eklund (Contributor)