SF Encyclopedia Picture Gallery
Robert Silverberg. The Silent Invaders (New York: Ace Books, 1963) [dos: shorter version first appeared October 1958 Infinity as by Calvin M Knox: pb/Ed Emshwiller]
From the collection of Roger Robinson
Robert Silverberg. The Silent Invaders (New York: Ace Books, 1963) [dos: shorter version first appeared October 1958 Infinity as by Calvin M Knox: pb/Ed Emshwiller]
From the collection of Roger Robinson