Source: "Tales to Astonish" #1, via "Uncanny Tales from the Grave" #6. Art: Steve Ditko
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Sources: Reprints in "Worlds Finest Comics" #179 and #192
Source: A reprint in"Tomb of Darkness" #11. Art: Jack Kirby
Source: "Astonishing Tales" #11 via "Crypt of Shadows" #18. Art appears to be Jack Kirby inked by Steve Ditko.
Source: "Action Comics" #265.
Source: "Superman" #173
Source: DC comics from the early-mid 1960s.
Source: "Superman" #173
Source: "Strange Tales" #108 - Jack Kirby
Extreme zooms of details from this frame are posted here: http://4cp.posterous.com/41-185