If comic book writers do any reading at all, of course others' ideas may resurface even unconsciously as springboards for scripts. Where is the line crossed into plagiarism?
C. M Kornbluth's story "The Little Black Bag" was published in Astounding Stories, July/50. The situation involves a doctor finding a bag of surgical instruments from the future. I've recognized that situation in two comic book stories that came out a few years later.
Neither follows the Kornbluth story's plot at all closely; that had a grisly ECish ending, and these two stories came out under the Comcs Code. Still, (especially considering the Marvel story's title), it's obvious the writers were familiar with the prose story. I wonder if Edmond Hamilton springboarded it even further into "The Burglar Kit from the Future" in Jimmy Olsen...
As to Joe Gill's style, in "The Strange Package" there's a good example of his joining two sentences with an "and" but no comma in a caption: The hospital was close and he walked through the early, gathering darkness toward it!