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- 1Treachery of MarsDecember 30, 1950
- 2The Lethal LadyJanuary 6, 1951
- 3Intrigue in the CabinetJanuary 13, 1951
- 4The Agra RayJanuary 20, 1951
- 5The Ivy of DeathJanuary 27, 1951
- 6Trouble on Saturn's Third MoonFebruary 3, 1951
- 7Solo Flight to JupiterFebruary 10, 1951
- 8Cosmic Dedris WaringFebruary 17, 1951
- 9The Planos EpidemicFebruary 24, 1951
- 10Tunnel of Escape (aka Tunnel of Death)March 3, 1951
- 11The Perilous SleepMarch 10, 1951
- 12A Vacation at Lake AzureMarch 17, 1951
- 13Theft of the Zeta RayMarch 24, 1951
- 14Blackmail on SaturnMarch 31, 1951
- 15The Man in the Radurium GloveApril 7, 1951
- 16Under the Red Lake of JupiterApril 14, 1951
- 17The Counterfeit CommanderApril 21, 1951
- 18Mysterious Mission to CanaliApril 28, 1951
- 19The Major's DilemmaMay 5, 1951
- 20Isolation in SpaceMay 12, 1951
- 21The Tourist TrapMay 19, 1951
- 22Dangerous IntrigueMay 26, 1951
- 23The Secret InjectionJune 2, 1951
- 24The Treacherous TechniciansJune 9, 1951
- 25Beyond the Rim of SpaceJune 16, 1951
- 26Race Against DeathJune 23, 1951
- 27The Lost City of the CarnacansJune 30, 1951
- 28The Deadly WeaponJuly 7, 1951
- 29The Legend of Wild Man's RidgeJuly 14, 1951
- 30Way Station to the StarsJuly 21, 1951
- 31The Hidden ReflectorJuly 28, 1951
- 32The Dangerous DiscoveryAugust 4, 1951
- 33Spaceship on the Edge of ForeverAugust 11, 1951
- 34The Underwater HideoutAugust 18, 1951
- 35A Big Wheel Named FerrisAugust 25, 1951
- 36The Vindictive BrotherSeptember 1, 1951
- 37Photograph of a TraitorSeptember 8, 1951
- 38The Couragous CowardSeptember 15, 1951
- 39The Theft of the ScramblerSeptember 22, 1951
- 40Prometheus Bound for DestructionSeptember 29, 1951
- 41Immediate DisasterOctober 6, 1951
- 42Lunatics from the FutureOctober 13, 1951
- 43The Space Patrol Code BeltOctober 20, 1951
- 44The Floating Image in SpaceOctober 27, 1951
- 45Secret PerilNovember 3, 1951
- 46The Parasite DiscNovember 10, 1951
- 47The Secret of TerraNovember 17, 1951
- 48Jungle of No ReturnNovember 24, 1951
- 49Prison of Deadly GasDecember 1, 1951
- 50The SacrificeDecember 8, 1951
- 51Flight of the GalaxyDecember 15, 1951
- 52Fair ExchangeDecember 22, 1951
- 53The Counterfeit PuzzleDecember 29, 1951