Between 1965 and 1976, Sol Cohen published over a hundred issues of science fiction magazines under a set of related titles.
In March 1965, Ziff Davis sold two of their magazines, Amazing Stories and Fantastic, to Sol Cohen.
Cohen interpreted this to mean that he could reprint any stories he wished from the magazines' backfile, without needing to pay the authors.
In the meantime Cohen decided to take further advantage of his ownership of the serial rights by launching additional magazines to reprint them.
The magazine became bimonthly starting with issue 22, dated December 1971, and from June 1972 the stories were again taken from Goldsmith's era, with occasional selections from other editors.
[5] This appeared to be another retitling of SF Classics, since the issue was numbered 8, but in fact Cohen was simply using the existing distribution relationship to try a different magazine with a fantasy orientation.
[4][5] Three more quarterly issues of Space Adventures appeared in 1970, numbered 10, 11, and 12, and that summer Cohen published another new title, Science Fiction Classics Annual.
From issue 13 onwards, SF Adventure Classics reprinted material from Amazing Stories, from the first years of Ray Palmer's time as editor.
Other frequently appearing authors including John Russell Fearn, under his own name and pseudonyms, and Festus Pragnell, Don Wilcox, Ed Earl Repp, Neil R. Jones, and Leroy Yerxa.
[4] Strange Fantasy mostly selected material from 1960s issues of Fantastic, edited by Cele Goldsmith Lalli.
According to Ashley the stories chosen did not always reflect the high quality of the source issues: despite including work by Ursula Le Guin, Fritz Leiber, Harlan Ellision, J.G.
Highlights included "Midnight in the Mirror World" by Leiber, "Elixir for the Emperor" by John Brunner, Le Guin's "The Word of Unbinding, and Zelazny's "Thelinde's Song", a Dilvish the Damned story.
He paid for the rights, and acquired cover artwork and interior illustrations from Steve Fabian; Ashley comments that the result was "far superior in appearance to the other Cohen reprint magazines".