Mystery) 1958, Sweden, Wennerberg, Rymd-böckerna #7, Paperback (160 pp), as Marsianernas Gåta (The Martians’ Riddle) 1960, France, Daniber, L’Alouette #7, 1960 Jan 01, Hardback (189 pp), as Le Mystère des Lunes de Mars (The Mystery of the Moons of Mars) 1963, USA, Tempo Books, Mar 1963, Paperback (191 pp) 1965, USA, Tempo Books/Grosset & Dunlap, Dec 1965, Paperback (191 pp) Reviews The book was reviewed by An anonymous reviewer in Kirkus Reviews for 1955 Sep 09. The reviewer wrote: “A jaunty story, somewhat more humorous and lighthearted than the others in this series, takes young Nelson Parr, a Terrestrian born in the Martian outpost and research center, through a set of adventures that unlocks Mars’ secret. A political controversy is raging on Earth as to whether or not to continue to support the Martian outpost, where Nelson’s father is research chief. Those in favor point to the marvelous machines found on Mars, any one of which could advance civilization eons, if their secret could be discovered. Going to work on the problem, Nelson finds out – in an interesting chain of events that characterizes a Mars basically like the canal-covered red planet we know it to be now – that the Martian moons Phebos (sic) and Deimos, are centers of tyrannical factions that have kept Mars in sub-jugation. Phebos (sic) and Deimos are vanquished and all is well.” References Notes Sources Tuck, Donald H. (1974). The Encyclopedia of Science Fiction and Fantasy. Chicago: Advent. pg. 466. . Listings The book is listed at The Library of Congress as http://lccn.loc.gov/55005741 The British Library as UIN = BLL01003965635 1955 American novels 1955 science fiction novels American science fiction novels Children's science fiction novels Novels set on Mars Fiction set on Mars' moons Space exploration novels