SF Encyclopedia Picture Gallery
Philip José Farmer. The World of Tiers: Volume I (Garden City, New York: Doubleday and Company, 1981) [omni of The Maker of Universes (1965), The Gates of Creation (1966) and A Private Cosmos (1968): World of Tiers: hb/Boris Vallejo]
Image courtesy of John W Knott, Jr, Bookseller