Titles by Keith Laumer marked with tag: parallel universe
- 2005 - Imperium
- 1990 - Zone Yellow
- 1984 - The Galaxy Builder
- 1981 - Beyond the Imperium
- 1972 - The Shape Changer
- 1970 - The World Shuffler
- 1968 - Assignment in Nowhere
- 1966 - The Time Bender
- 1965 - The Other Side of Time
- 1962 - Worlds of the Imperium