With the appearance of Out of the Night, I assume (?) that ACG is OK and legal. There were 4 titles that the company had, primarily in the late 1950's and early 1960's if memory serves me, that were really fun. They were Adventures into the Unknown, Forbidden Worlds, Unknown Worlds, and Herbie (the fat fury.) Forbidden Worlds introduced a character called Nemesis, sort of a super-hero magician; and Herbie of course, is legendary.
Anyone I've encountered who has read this stuff will tell you that there was a tone to the whole line that was, well, odd. Mostly science fiction and fantasy stories. A lot of very frenetic Costanza art in the 1960's issues.
It would be great to see some of those again!