Brainship
1 The Ship Who Sang (1969)
2 Partnership (1992) (with Margaret Ball)
3 The Ship Who Searched (1992) (with Mercedes Lackey)
4 The City Who Fought (1993) (with S M Stirling)
5 The Ship Who Won (1994) (with Jody Lynn Nye)
6 The Ship Errant (1996) (with Jody Lynn Nye)
7 The Ship Avenged (1997) (with S M Stirling)
continued in the series by Mercedes Lackey
2 Partnership (1992) (with Margaret Ball)
3 The Ship Who Searched (1992) (with Mercedes Lackey)
4 The City Who Fought (1993) (with S M Stirling)
5 The Ship Who Won (1994) (with Jody Lynn Nye)
6 The Ship Errant (1996) (with Jody Lynn Nye)
7 The Ship Avenged (1997) (with S M Stirling)
continued in the series by Mercedes Lackey
Omnibus editions
Brain Ships (2003) (with others)
The Ship Who Saved the Worlds (2003) (with Jody Lynn Nye)
The City and the Ship (2004) (with S M Stirling)
The Ship Who Saved the Worlds (2003) (with Jody Lynn Nye)
The City and the Ship (2004) (with S M Stirling)