Gregg Haljan
The Narratives of Gregg Haljan by Ray Cummings
Two great early space opera novels, Brigands of the Moon (1930), and its sequel, Wandl, the Invader (1932) in which Gregg Haljan saves the world first from space pirates and then from space invaders.
Wandl, the Invader by Ray Cummings
In this sequel to “Brigands of the Moon”, Gregg Haljan tries to save the Earth, Mars and Venus from being destroyed by the giant brains of the planet Wandl.
Brigands of the Moon by Ray Cummings
One of the early great space opera novels, Brigands of the Moon by Ray Cummings (1887-1957) was serialized in four parts in Astounding Stories of Super Science in its March through June 1930 issues. Gregg Haljan, Third Officer of the Planetara, must fight Martian pirates and Earth traitors to protect the precious radium ore found on the Moon from being hijacked.