Outros trabalhos

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)