- 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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Novels
- Croc (1976) [only as by David James (1942-2019)]
- Massacre in the 22nd Century (1980) [only as by uncredited]
- War of the Citadels (1980) [only as by uncredited]
- Crisis on Citadel II (1980) [only as by uncredited]
- The Trinity Factor (1981) [only as by Sean Flannery]
- Forces from the Federation (1981) [only as by uncredited]
- Citadels Under Attack (1981) [only as by uncredited]
- Citadels on Earth (1981) [only as by uncredited]
- Last Come the Children (1982)
- Terminator 3: Rise of the Machines (2003)
- Windsor R.I.P. (1991) [only as by Sean Flannery]
- Breaking Point (2001)
- Genesis (2009)