Skip To Content
- 1Flowers of DeathJanuary 5, 1952
- 2Cosmic Smoke GunsJanuary 12, 1952
- 3Lost in the Snow Cap Region of MarsJanuary 19, 1952
- 4Explosion on Morehouse FiveJanuary 26, 1952
- 5The Evil Guardian of HarpolaFebruary 2, 1952
- 6Hit by a MeteoriteFebruary 9, 1952
- 7Planetoid PlotFebruary 16, 1952
- 8Victim of AmnesiaFebruary 23, 1952
- 9The Lieutenant's RevengeMarch 1, 1952
- 10The Mind ReadersMarch 8, 1952
- 11Slaves of the Exonium MineMarch 15, 1952
- 12Abandoned in Outer SpaceMarch 22, 1952
- 13The Great Bank RobberyMarch 29, 1952
- 14The Mysterious MoonquakesApril 5, 1952
- 15The Phantom FleetApril 12, 1952
- 16Trouble on TitanApril 19, 1952
- 17Sacrifice to the Moon GodApril 26, 1952
- 18Uncertain DeathMay 3, 1952
- 19The Alien InvasionMay 10, 1952
- 20A Threat to the United PlanetsMay 17, 1952
- 21The Threat of the ThormanoidsMay 24, 1952
- 22Jungle JeopardyMay 31, 1952
- 23The Scheming Sibling (aka Escape from Terra)June 7, 1952
- 24Treachery Under the Kralic Mountains (aka Danger on Mars)June 14, 1952
- 25Message to Mercury (aka Mission to Mercury)June 21, 1952
- 26The Inter-Planetary Smugglers (aka The Deadly Ray Gun)June 28, 1952
- 27The Stolen Barrier (aka The Force Barrier)July 5, 1952
- 28The Black GauntletJuly 12, 1952
- 29The Derelict Space StationJuly 19, 1952
- 30The Mystery of Ancient Egypt (in the 30th Century)July 26, 1952
- 31The Flying Pirate ShipAugust 2, 1952
- 32Emergency Flight to MercuryAugust 9, 1952
- 33Blackmail at Lake AzureAugust 16, 1952
- 34The Hidden MapAugust 23, 1952
- 35The Green Mold of MarsAugust 30, 1952
- 36The Galaxtic WarSeptember 6, 1952
- 37The Energy ThiefSeptember 13, 1952
- 38Sabotage of the Jupiter RunSeptember 20, 1952
- 39The Star RaidersSeptember 27, 1952
- 40The Code BreakersOctober 4, 1952
- 41Errand of MercyOctober 11, 1952
- 42Underwater TreacheryOctober 18, 1952
- 43The Electronic ManOctober 25, 1952
- 44Treachery on Terra FiveNovember 1, 1952
- 45Frontier EpidemicNovember 8, 1952
- 46Power DiveNovember 15, 1952
- 47Three ExilesNovember 22, 1952
- 48The ShakedownNovember 29, 1952
- 49The Human TrapDecember 6, 1952
- 50The Chase in TimeDecember 13, 1952
- 51The Deadly SunbeamDecember 20, 1952
- 52The ConspiracyDecember 27, 1952