Here's an article featuring a book on how pulp covers began, from I09. We're talking ships that fly, John Carter illustrations and a camel with a machine gun mounted to its back.
Speaking of pulp covers, B-Sol, where are you?
"Cormac Brown" is my pen name. I'm an up-and-slumming writer in the city of Saint Francis and I'm following in the footsteps of Hammett...minus the TB and working for the Pinkerton Agency. A couple of stories that I've stiched and stapled together, can be found here.