Diversions of the Groovy Kind has a ton of vintage John Severin comic scans for your perusal. I wasn't a big fan of Severin growing up, but over the years my appreciation for his work has grown and grown. He must have drawn thousands of pages for Cracked in the sixties and seventies! Here are some of them:
John Severin Takes on Star Wars and Rocky
http://diversionsofthegroovykind.blogspot.com/2009/09/black-and-white-wednesday-john-severins.html
Tarzan by Severin
Charley's Angels and MASH
All the John Severin posts