Are you not familiar with the "Fabulous furry freak brothers"? by artist Gilbert Shelton. They were the most popular underground comix in the 60's and early 70's? They were Freewheelin Franklin, Phineas T. Freakears and Fat Freddy. My avatar is of Fat Freddy and his Cat. There was also Mr. Natural, ect. There was also the famous Robert Crumb who did alot of comix and is known for his art work on the the Janis Joplin Cheap Thrills Album. There's the link for some of the covers.
underground comix « Classic Kicks