["Lucky Starr and the Big Sun of Mercury"] is much the best of the Space Patrol genre this spring. It's an interplanetary detective story of sabotage on a mysterious project on Mercury, with well constructed deduction, exciting action and accurate astronomical information.

H. H. Holmes, in his review of "Lucky Starr and the Big Sun of Mercury," in New York Herald Tribune Book Review (© I.H.T. Corporation; reprinted by permission), May 13, 1956, p. 36.