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[Linked Image from m.media-amazon.com]

Listing in posts above Kirby's late 1950's work after parting ways with editor Jack Schiff and DC, and working for other publishers, and finally ending up at Marvel/Atlas in late 1958, there's one other final Harvey series wih Joe Simon and Jack Kirby work I forgot to list :

ALARMING TALES (1957-1958)
all 6 issues online at :
https://readallcomics.com/alarming-tales-1/ ( index of he uncredited stories in ALARMING TALES 1-5, from 1957-1958 )



I first saw all these stories collected in a Harvey digest-size anthology reprint, titled SHOCKING TALES, released in Oct 1981, that collects all the Kirby stories from ALARMING TALES 1 and 2, both are full issues of almost entirely Kirby stories, this digest reprint issue also includes a number of other 1950's Harvey science fiction and horror stories, most or all of entire issues of BLACK CAT MYSTERY 45 (Aug 1953), and MAN IN BLACK 1 (Sep 1957, reprinting the entire issue by Powell), and a few stories from WITCHES TALES 21 (Oct 1953).
https://readallcomics.com/shocking-tales-digest-1981/
https://www.comics.org/issue/35722/ ( index of the reprinted SHOCKING TALES stories, again uncredited in these 1981 reprints )



Unusual in comparison to the other titles I listed previously, the stories in ALARMING TALES seem to all be separate solo Simon stories, and solo Kirby stories, rather than collaborative Simon / Kirby stories.

In ASTONISHING TALES issue 1, "The Cadmus Seed" (5 pages) can be seen as a precursor using the same ideas of cloning and DNA manipulation, and a vast secret underground research lab to conduct these experiments, similar to what would appear 13 years later in Kirby's JIMMY OLSEN run in issues 133-148, from 1970-1972, wih the DNA Project, the Hairies, the Wild Area, and the Evil Factory.
https://readallcomics.com/supermans-pal-jimmy-olsen-v1-133/

Also in issue 1, "The Last Enemy" (6 pages), likewise presents a future world where human civilization is gone, with Earth ruled instead by evolved civilizations of human-like animals such as dogs, wolves, bears and rats in a post apocalyptic world, that is a rough template of the ideas that would later be expanded on in Kirby's 1972 KAMANDI series.
https://readallcomics.com/kamandi-the-last-boy-on-earth-01/


The robot story "I Want To Be A Man" in ALARMING TALES 2, where a robot develops a friendship with a man, and craves to become human, has similarities to Kirby's later 2001:A SPACE ODYSSEY and MACHINE MAN 1-9 series for Marvel, from 1977-1978.
https://readallcomics.com/alarming-tales-2/
https://readallcomics.com/2001-a-space-odyssey-008/
https://readallcomics.com/machine-man-v1-01/


Another story, This World Is Ours" (5 pages) in issue 3, has an opening page that is very similar in visuals to the opening page of Kirby's NEW GODS issue 1 in Jan 1971.
https://readallcomics.com/alarming-tales-3/
https://readallcomics.com/new-gods-v1-01/

ALARMING TALES 3 and 4 were not collected in that digest-size collection. And from issue 3 on, have an increasing amount of work by other artists.
Issues 3 and 4 have just one Kirby story in each, with Simon solo covers on issues 2-4. Issue 1 has a Kirby/Simon cover.
https://readallcomics.com/alarming-tales-4/