Novels

• Islands (1976) (Nebula Award nominee) (ISBN 0-7592-4000-0)
• A City in the North (1976) (ISBN 0-446-94062-3)
• Journey (1978) (ISBN 0-7592-2560-5)
• Dangerous Games (1980) (ISBN 0-7592-4939-3)
• The Sword of Winter (1983) (ISBN 0-89366-160-0)
• Growing Light (as Martha Conley) (1983) (ISBN 0-312-09823-5)
• Those Who Favor Fire (1984) (ISBN 0-671-44216-3)

Short stories

• Smack Run (1972); New Worlds 5
• A Scarab in the City of Time (1975); New Dimensions 5
• Secret Rider (1976); New Dimensions 6
• The State of the Art on Alyssum (1977); New Dimensions 7
• The View from Endless Scarp (1978); The Magazine of Fantasy & Science Fiction
• The Captain and the Kid (1979); Universe 9
• Circus (1980); New Dimensions 10
• Singles (1981); Shadows 5
• On Cannon Beach (1984); Asimov's Science Fiction
• Big Dome (1985); The Planets
• Sea Changes (1985); Asimov's Science Fiction
• Lapidary Nights (1987); Universe 17
• Thank You, Mr. Halifax (1985); Omni Magazine
• Undeniably Cute: A Cautionary Tale (1986); Asimov's Science Fiction
• Haunted (1986); The Twilight Zone Magazine
• Managing Helen (2003); The Readerville Journal
• The Dark Boy (2007); The Magazine of Fantasy & Science Fiction
• Làzaro y Antonio (2007); The Magazine of Fantasy & Science Fiction