Perry Rhodan

A series published weekly in Germany by a variety of authors since the 1960's

1. Operation Stardust
2. The Radiant Dome
3. Galactic Alarm
4. Invasion from Space
5. The Vega Sector
6. The Secret of the Time Vault
7. Fortress of the Six moons
8. The Galactic Riddle
9. Quest through Space and Time
10. The Ghosts of Gol
11. Planet of the Dying Sun
12. The Robots of Tuglon
13. The Immortal Unknown