Novels

• Pennterra (Congdon & Weed, 1987; reprint edition, Fantastic Books, 2009; eBook edition, Weightless Books, 2010)
• The Ragged World (Holy Ground Trilogy, Book 1, St. Martin's Press, 1991)
• Time, Like an Ever-Rolling Stream (Holy Ground Trilogy, Book 2, St. Martin's Press, 1992)
• The Bird Shaman (Holy Ground Trilogy, Book 3, Bascom Hill Publishing Group, 2008; eBook edition, Weightless Books, 2010)

Collections

• Keeping Time: Poems (LSU Press, 1976, poems)
• Whinny Moor Crossing (Princeton University Press, 1984, poems)
• Two that Came True (Pulphouse Press, 1991, science-fiction stories)

Translations from the Swedish

• Gentleman, Single, Refined and Selected Poems, 1937-1959 by Hjalmar Gullberg (LSU Press, 1979)
• The North! To The North! Five Swedish Poets of the Nineteenth Century (Southern Illinois University Press, 2001)

Short stories

• "After Three Wordsworths" (Shenandoah, March 1980)
• "Surviving" (F&SF, June 1986)
• "The Hob" (Asimov's, May 1988)
• "Tiny Tango" (Asimov's, February 1989)
• "Not Without Honor" (Asimov's, May 1989)
• "Remembrance of Things Future" (Asimov's, December 1989)
• "I, Said the Cow" (F&SF, January 1990)
• "Final Tomte" (F&SF, June 1990)
• "The Ragged Rock" (Asimov's, December 1990)
• "Chickasaw Slave" (Asimov's, September 1991)
• "The Realms of Glory" (Heaven Sent, Peter Crowther and Martin H. Greenberg, eds, DAW Books, 1995)
• "The Bradshaw" (F&SF, October 1998)
• "The Bear’s Baby" (F&SF, October/November 2003)
• "The Bird Shaman’s Girl" (F&SF, October/November 2007)

Non-fiction

• James Merrill: An Introduction to the Poetry (Columbia University Press, 1984)
• Homestead Year: Back to the Land in Suburbia (Lyons & Burford, 1995)

• 1967 Fulbright Teaching Fellowship to the University of Lund, Sweden
• 1971 First prize, Graduate Division, in the Academy of American Poets Contest at the University of Pennsylvania
• 1973 Fulbright Travel Grant to Sweden
• 1973 Eunice Tietjens Prize from Poetry magazine
• 1976 First Ingram Merrill Foundation Grant in poetry
• 1976 Levinson Prize from Poetry magazine
• 1978 Columbia University Translation Center Award
• 1980 Second Ingram Merrill Foundation Grant
• 1981 Poem "Scatsquall in Spring" included in Pushcart IV: Best of the Small Presses annual collection
• 1982 Annual Translation Prize of the Swedish Academy
• 1983 National Endowment for the Humanities Translation Grant
• 1984 National Endowment for the Arts Creative Writing Fellowship Grant
• 1987 "Surviving": won the Theodore Sturgeon Memorial Award for the best science fiction story of the year; also a finalist for a 1986 Nebula Award in the novelette category
• 1988 Received the John W. Campbell Award for Best New Writer at the World Science Fiction Convention in New Orleans
• 1989 "The Hob": a finalist for the 1988 Nebula Award in the novelette category
• 1990 "Tiny Tango": a finalist for the 1989 Nebula Award and the 1990 Hugo Award in the novella category
• 1991 Third Ingram Merrill Foundation Grant for poetry and translation
• 1991 The Ragged World: a New York Times Notable Book
• 1992 Time, Like an Ever-Rolling Stream: a New York Times Notable Book and shortlisted for the James Tiptree Jr. Award
• 1994 Translation grant from the Swedish Academy
• 1998 Presenter at the Nobel Symposium on Translation of Poetry and Poetic Prose
• 1999 One-year stipend from the Swedish Authors' Fund