First Dell printing: January 1965. Mass market paperback. Collection of classic sci-fi short novels: "Strange Case of Dr. Jekyll and Mr. Hyde" (1886) by Robert Louis Stevenson; "The Invisible Man" (1897) by H. G. Wells; "The Absolute at Large" (1927) by Karel Capek; "Gulf" (1949) by Robert A. Heinlein; "E for Effort" (1947) by T. L. Sherred; "Hunter, Come Home" (1963) by Richard McKenna.
