Natalie Baaklini looks at how pulp science fiction cover art got its sense of wonder, starting with a science-nonfiction magazine cover from well before the so-called pulp era:
This cover art for The All-Story magazine by Harry Grant Dart really captures the spirit of the early years of aviation — which seems so very, very steampunk today:
Elsewhere I found another Harry Grant Dart piece, this one from Harper’s Weekly in 1908, titled “A Look into the Future” — which, in the tradition of science-fiction, means a look into the future of war:
I definitely prefer the genteel, older style to this garish Hugo Gernsback-era Amazing Stories cover by Frank R. Paul