Welcome to the day of restless souls . . .
The poster above comes from the ever-astonishing Golden Age Comic Book Stories site. I don't know how he does it, but the proprietor of that site puts up, almost every day, high-res scans of amazing works of popular art, by no means limited to comic book art. There's also a generous abundance of classic book and magazine illustration and promotional art for movies.
Check it out — it's one of the Internet's most consistently rewarding treasure troves.