- Novel (featuring Richard Dragon): "Dragon's Fist" (1974)(co-authored by Jim Berry and Dennis O'Neil; published under the pseudonym 'Jim Dennis')
- Novel: "The Bite of Monsters" (1971)
- Book: "Secret Origins of the Super DC Heroes" (1976)
- Novel: "Batman: Knightfall" (1994)
- Book: "The DC Comics Guide to Writing Comics" (2001)
- Novel: "Green Lantern: Hero's Quest" (2005)
- Novel: "Batman Begins" (2005)(movie novelization)
- Novel: "Helltown" (2006)
- Graphic Novel: "Justice, Inc" (1975)
- Graphic Novel: "The Shadow 1941" (with Michael W.Kaluta and Russ Heath)(1988)
- Graphic Novel: "Shadow the Private Files" (with Mark Waid)(1989)
- Graphic Novel: "Batman: Bride of the Demon" (1990)
- Graphic Novel: "Batman: Birth of the Demon" (1992)
- Graphic Novel: "Green Lantern/Green Arrow: Hard-Traveling Heroes" (1992)
- Graphic Novel: "Green Lantern/Green Arrow: More Hard-Traveling Heroes" (1993)
- Graphic Novel: "Batman: Sword of Azrael" (1993)
- Graphic Novel: "Batman: Bloodstorm" (1995)
- Graphic Novel: "Batman: Death of Innocents: the Horror of Landmines" (1996)
- Graphic Novel: "Batman: I Joker" (1998)
- Graphic Novel: "Batman: Shaman" (1998)
- Graphic Novel: "Batman in the Seventies" (2000)
- Graphic Novel: "The Deadman Collection" (2001)
- Graphic Novel: "Batman: The Ring, the Arrow, and the Bat" (2003)
- Graphic Novel: "Green Lantern/Green Arrow Collection: Volume 1" (2004)
- Graphic Novel: "Green Lantern/Green Arrow Collection: Volume 2" (2005)
- Graphic Novel: "Green Lantern: Hero's Quest" (2005)
- Novella: "The Iconoclasts" - Fantastic Stories (Ultimate Publishing, 1971)
- Novella: "Report on a Broken Bridge" - Ellery Queen's Mystery Magazine, (December, 1971)
- Novella: "After They've Seen Paree" - Generation (1972)
- Novella: "The Elseones" - Fantasy & Science Fiction (February, 1972)
- Novella: "Mister Cherubim" - Fantastic Stories (June, 1972)
- Novella: "Noonday Devil" - Saving Worlds (1973)
- Novella: "Devil Night" - Haunt of Horror (August, 1973)
- Novella: "Annie Mae: A Love Story" - The Far Side of Time (1974)
- Novella: "There Are No Yesterdays!" - Unknown Worlds of Science Fiction (March, 1975)
- Novella: "Sister Mary Talks to the Girls Sodality" - Harpoon Magazine (January, 1975)
- Novella: "The Killing of Mother Corn" - Fantasy & Science Fiction (February, 1975)
- Novella: "Father Flotsky" - Apple Pie Magazine (May, 1975)
- Novella: "Alias the Last Resort" - Best Detective Stories of the Year (1975)
- Novella (with Alfred Bester): "Adam and No Eve" - Unknown Worlds of Science Fiction (March, 1975)
- Novella: "Wave By" - Fantasy & Science Fiction (September, 1980)
- Novella: "Bicycle Superhero"- Superheroes (1995)
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