- Author: David Hagberg Author Record # 5768
- Legal Name: Hagberg, David James
- Birthplace: Duluth, Minnesota, USA
- Birthdate: 9 October 1942
- Deathdate: 8 September 2019
- Language: English
- Webpages: david-hagberg.com, SFE, Wikipedia-EN
- Used These Alternate Names: Sean Flannery, David James (1942-2019)
- Author Tags: science fiction (7), horror (1)
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Fiction Series
- Flash Gordon
- Flash Gordon (David Hagberg Series)
- 1
Massacre in the 22nd Century (1980)
only appeared as:
- Variant: Massacre in the 22nd Century (1980) [as by uncredited]
- Translation: Das Jahrtausend-Erbe [German] (1982) [as by uncredited]
- 2
War of the Citadels (1980)
only appeared as:
- Variant: War of the Citadels (1980) [as by uncredited]
- Translation: Krieg der Zitadellen [German] (1983) [as by uncredited]
- 3
Crisis on Citadel II (1980)
only appeared as:
- Variant: Crisis on Citadel II (1980) [as by uncredited]
- Translation: Krise auf Zitadelle II [German] (1983) [as by uncredited]
- 4
Forces from the Federation (1981)
only appeared as:
- Variant: Forces from the Federation (1981) [as by uncredited]
- Translation: Streitkräfte der Föderation [German] (1983) [as by uncredited]
- 5
Citadels Under Attack (1981)
only appeared as:
- Variant: Citadels Under Attack (1981) [as by uncredited]
- Translation: Großangriff [German] (1984) [as by uncredited]
- 6
Citadels on Earth (1981)
only appeared as:
- Variant: Citadels on Earth (1981) [as by uncredited]
- Translation: Zitadellen auf der Erde [German] (1984) [as by uncredited]
- 1
Massacre in the 22nd Century (1980)
only appeared as:
- Flash Gordon (David Hagberg Series)
- Terminator Universe
- Croc (1976) [only as by David James (1942-2019)]
- The Capsule (1976)
- The Trinity Factor (1981) [only as by Sean Flannery]
- Last Come the Children (1982)
- Heartland (1983)
- Windsor R.I.P. (1991) [only as by Sean Flannery]
- Breaking Point (2001)
- Genesis (2009)