Superheroes sprang from the era of pulp icons like The Phantom and Doc Savage, and now cartoonist Chris Schweizer has some of today's most popular costumed characters back to their roots.

In a project undertaken just for fun, the creator of The Crogan Adventures imagined some of the Avengers and X-Men as they might've appeared in the 1920s and 1930s in a series called "Marvel Pulp."

Looking forward to the Secret WarsWestern of 1872? Consider this a thematic sequel ... 1927. Take a look at some of the illustrations below, and see the rest on Schweizer's blog.