SF Encyclopedia Picture Gallery
Philip José Farmer. Behind the Walls of Terra (New York: Ace Books, 1970) [World of Tiers: pb/Gray Morrow]
Image courtesy of Clute Science Fiction Library at Telluride
Philip José Farmer. Behind the Walls of Terra (New York: Ace Books, 1970) [World of Tiers: pb/Gray Morrow]
Image courtesy of Clute Science Fiction Library at Telluride