1971 Jan/Feb WORLDS OF IF Science Fiction Digest Magazine FN 6.0 Hayden Power

1971 April GALAXY SCIENCE FICTION Digest Magazine FN 6.0 Theodore Sturgeon

1967 June WORLDS OF IF Science Fiction Digest Magazine FN 6.0 Andre Norton

1971 June WORLDS OF IF Science Fiction Digest Magazine FN 6.0 Philip Jose Farmer

1968 Nov WORLDS OF IF Science Fiction Digest Magazine FN 6.0 Roger Zelazny

1969 July WORLDS OF IF Science Fiction Digest Magazine FN 6.0 Keith Laumer

1969 May WORLDS OF IF Science Fiction Digest Magazine FN 6.0 Robert Bloch

1957 Dec WORLDS OF IF Science Fiction Digest Magazine FN 6.0 Robert Silverberg