- Author: George Sjöberg Author Record # 339109
- Legal Name: Sjöberg, George Tage Valentin
- Birthdate: 1930
- Deathdate: 29 November 2004
- Language: Swedish
- Webpages: infinitematrix.net
- Used These Alternate Names: Tage Valentin
- Note: He wrote and illustrated both as George Sjöberg and as Tage Valentin.
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Magazine Editor
- Fhan, Nr. 1 (1957)
- Science fiction Forum - 1960 (1960)
- Star - 1957 (1957)
- Fårvaktare (1957)
- Vi som tillhör morgondagen (1957)
- Det handlar om stjärnorna (1960)
- Ledare (Fhan, 1957:1) (1957)
- Den första julnatten (1960)
- Den första julnatten (1960) with Tage Valentin
- Fhan, Nr. 1 [2] (1957)
- Fhan, Nr. 1 [2] (1957) with Tage Valentin
- Fårvaktare (1957)
- Fårvaktare (1957) with Tage Valentin
- Hemkomst [2] (1960)
- Hemkomst [2] (1960) with Tage Valentin
- Science fiction Forum - 1 1960 [8] (1960)
- Science fiction Forum, Nummer 1 [3] (1960) with Tage Valentin
- Star, Nr. 5–6 (1957)
- Star, Nr. 5–6 (1957) with Tage Valentin
- Vi som tillhör morgondagen (1957)
- Vi som tillhör morgondagen (1957) with Tage Valentin