Here is a science-fiction classic, as exciting and ingenious as only a master of super-science could write. When Ray Cummings took leave of this planet early in 1957, the world of modern science-fiction lost one of its genuine founding fathers. For the imagination of this talented writer supplied a great many of the most basic themes upon which the present superstructure of science-fiction is based. Following the lead of Jules Verne and H. G. Wells, Cummings successfully bridged the gap. (Goodreads)

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