- Author: Eckhard Siegert Author Record # 183262
- Legal Name: Siegert, Eckhard
- Language: German
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Short Fiction Series Essays
- Letter (Atlan #125) (1974)
- Letter (Perry Rhodan #1044) (1981)
- Letter (Perry Rhodan #1168) (1984)
- Letter (Perry Rhodan #2476) (2009)
- Letter (Perry Rhodan #2485) (2009)
- Letter (Perry Rhodan #2512) (2009)
- Letter: Quantensprünge (2009)
- Letter (Perry Rhodan #2539) (2010)
- Letter (Perry Rhodan #2543) (2010)