Background is panels from various issues from Tales of Suspense (Marvel, 1959 series) #39-72.
Inks credit from Nick Caputo via the GCD Error List (30 August 2006); the original indexer credited Dick Ayers.
Inks credit from Nick Caputo via the GCD Error List (30 August 2006); the original indexer credited Dick Ayers.
Inks credit from Nick Caputo via the GCD Error List (30 August 2006); the original indexer credited Dick Ayers.
Inks credit from Nick Caputo via the GCD Error List (30 August 2006); the original indexer credited George Roussos.
Inks credit from Nick Caputo via the GCD Error List (30 August 2006); the original indexer credited George Roussos.
Inks credit from Nick Caputo via the GCD Error List (30 August 2006); the original indexer credited Dick Ayers.
Inks credit from Nick Caputo via the GCD Error List (30 August 2006); the original indexer credited Sol Brodsky. Reprint info added by Henry Kujawa via GCD Errors list (August 2007).
Inks credit from Nick Caputo via the GCD Error List (30 August 2006); the original indexer credited Vince Colletta.
Nick Caputo says "This one is tough. The top section looks like it was either inked by Ayers, with touch ups, or Kirby inked it himself. The bottom section with Cap looks like neither Kirby or Ayers inked it, although I can't confirm the style. It MAY be Carl Hubbell, who worked at Marvel around this time."
An article noting that the cover of ToS #42 was found in the Marvel Archives with the cover elements for issue #41 and ToS #48 had originally shown the name of the villain as "Mister Pain" but it saw publication as "Mister Doll".