A Plague of Demons Keith Laumer  

Worlds of the Imperium Keith Laumer  

Retief and the Warlords Keith Laumer  

Nine by Laumer Keith Laumer  

Galactic Odyssey Keith Laumer  

Assignment in Nowhere Keith Laumer  

The Shape Changer Keith Laumer  

Time Trap Keith Laumer  

Retief: Emissary to the Stars Keith Laumer  

Retief of the CDT Keith Laumer  

Retief at Large Keith Laumer  

Retief Unbound Keith Laumer