Through the Heart (1991) Winner Philip K. Dick Award-Fantasy
Tex and Molly in the Afterlife (1996) – Fiction
In the Land of Winter (1997) – Fiction
Kaspian Lost (1999)
Another Green World (2006)
Drode's Equations (1981), a short story that appeared in New Dimensions 12 and is available in the science fiction anthology The Ascent of Wonder: The Evolution of Hard SF, edited by David G. Hartwell and Kathryn Cramer (1994)