Anthologies
The Universe Series
Universe 1, Ace,1971
Universe 2, Ace, 1972
Universe 3, Random House, 1973
Universe 4, Random House, 1974
Universe 5, Random House, 1974
Universe 6, Doubleday, 1976
Universe 7, Doubleday,1977
Universe 8, Doubleday, 1978
Universe 9, Doubleday, 1979
Universe 10, Doubleday, 1980
Universe 11, Doubleday, 1981
Universe 12, Doubleday, 1982
Universe 13, Doubleday, 1983
The Best of Universe, Doubleday, 1984
Universe 14, Doubleday, 1984
Universe 15, Doubleday, 1985
Universe 16, Doubleday, 1986
Universe 17, Doubleday, 1987
The Year's Best Anthologies
The World's Best Science Fiction: 1965, with Donald A. Wollheim, Ace
The World's Best Science Fiction: 1966, with Donald A. Wollheim, Ace
The World's Best Science Fiction: 1967, with Donald A. Wollheim, Ace
The World's Best Science Fiction: 1968, with Donald A. Wollheim, Ace
The World's Best Science Fiction: 1969, with Donald A. Wollheim, Ace
The World's Best Science Fiction: 1970, with Donald A. Wollheim, Ace
The World's Best Science Fiction: 1971, with Donald A. Wollheim, Ace
The Best Science Fiction of the Year #1, Ballantine, 1972
The Best Science Fiction of the Year #2, Ballantine, 1973
The Best Science Fiction of the Year #3, Ballantine, 1974
The Best Science Fiction of the Year #4, Ballantine, 1975
The Best Science Fiction of the Year #5, Ballantine, 1976
The Best Science Fiction of the Year #6, Holt, Rinehart & Winston, 1977
The Best Science Fiction of the Year #7, Ballantine, 1978
The Best Science Fiction of the Year #8, Ballantine, 1979
The Best Science Fiction of the Year #9, Ballantine, 1980
The Best Science Fiction of the Year #10, Timescape Books, 1981
The Best Science Fiction of the Year #11, Timescape Books, 1982
The Best Science Fiction of the Year #12, Timescape Books, 1983
The Best Science Fiction of the Year #13, Baen Books, 1984
Terry Carr's Best Science Fiction of the Year #14, Tor Books, 1985
Terry Carr's Best Science Fiction of the Year #15, Tor Books, 1986
Terry Carr's Best Science Fiction and Fantasy Stories of the Year #16, Tor Books, 1987
Other Anthologies
Science Fiction for People Who Hate Science Fiction, Doubleday, 1966
New Worlds of Fantasy, Ace, 1967
The Others, Fawcett, 1969
New Worlds of Fantasy #2, Ace, 1970
On Our Way to the Future, Ace, 1970
New Worlds of Fantasy 3, Ace, 1971
This Side of Infinity, Ace ,1972
Into the Unknown, Thomas Nelson, 1973
An Exaltation of Stars, Pocket Books, 1974
Worlds Far and Near, Thomas Nelson, 1974
Creatures from Beyond : Nine Stories of Science Fiction and Fantasy, Thomas Nelson, 1975
Fellowship of the Stars, Simon & Schuster, 1975
The Ides of Tomorrow : Original Science Fiction Tales of Horror, 1976
Planets of Wonder: A Treasury of Space Opera, Thomas Nelson, 1976
Infinite Arena: Seven Science Fiction Stories About Sports, Thomas Nelson, 1977
Starshadows, Ace, 1977
To Follow a Star: Nine Science Fiction Stories About Christmas, 1977
Classic Science Fiction, Harper & Row, 1978
Year's Finest Fantasy, Berkeley/Putnam, 1978
The Year's Finest Fantasy, Volume 2, Berkeley, 1979
The Best Science Fiction Novellas of the Year #1, Ballantine, 1979
The Best Science Fiction Novellas of the Year #2, Ballantine, 1980
World's Near and Far: Nine Stories of Fiction and Fantasy, 1980
Fantasy Annual III, Timescape Books, 1981
A Treasury of Modern Fantasy, with Martin H. Greenberg, Avon, 1981
Fantasy Annual IV, Pocket SF, 1982
Fantasy Annual V, Pocket SF, 1983
100 Great Fantasy Short Short Stories, with Isaac Asimov and Martin H. Greenberg, 1984
The Science Fiction Hall of Fame, Vol. IV, Avon, 1986
Novels
Warlord of Kor, Ace, 1963
Invasion from 2500, with Ted White, as Norman Edwards, Monarch, 1964
Cirque: A Novel of the Far Future, Bobbs-Merril, 1977
The Light at the End of the Universe, Pyramid, 1977
Short Fiction
"Brown Robert," The Magazine of Fantasy & Science Fiction, July 1962
"Hop-Friend," The Magazine of Fantasy & Science Fiction, November 1962
"Stanley Toothbrush," as Carl Brandon, The Magazine of Fantasy & Science Fiction, July 1962
"The Old Man of the Mountains," The Magazine of Fantasy & Science Fiction, April 1963
"Touchstone," The Magazine of Fantasy & Science Fiction, May 1964
"A Complete Mystery," The Saint, July 1965
"The Robots Are Here," If, May 1967
"Sleeping Beauty," The Magazine of Fantasy & Science Fiction, May 1967
"City of Yesterday," If, December 1967
"The Planet Slummers," Galaxy, February 1968
"The Dance of the Changer and the Three," The Farthest Reaches, edited by J. Elder, Trident, 1968
"Star Dream," Galaxy, May 1969
"In His Image," Amazing, November 1971
"Thus I Refute," Fantastic, April 1972
"Ozymandias," Again, Dangerous Visions, edited by Harlan Ellison, Doubleday, 1972
"Saving the World," Saving Worlds, edited by Roger Elwood & Kidd, Doubleday, 1973
"The Answer," Frontiers 1: Tomorrow's Alternatives, edited by Roger Elwood, Macmillan, 1973
"Changing of the Gods," Infinity #5, edited by R. Hoskins, Lancer, 1973
"From Darkness to Darkness," Demon Kind, edited by Roger Elwood, Avon, 1973
"Some Are Born Cats," with Carol Carr, SF Tales, edited by Roger Elwood, Rand 1973
"They Live on Levels," New Dimensions 3, edited by Robert Silverberg, Doubleday, 1973
"The Winds at Starmont," No Mind of Man, edited by Robert Silverberg, Hawthorne, 1973
"The Colors of Fear," New Dimensions IV, edited by Robert Silverberg, Signet, 1974
"Rejoice, Rejoice, We Have No Choice," Future Kin, edited by Roger Elwood, Doubleday, 1974
"Castle in the Stars," Tomorrow: New Worlds of SF, edited byRoger Elwood Evans, 1975
"Virra," The Magazine of Fantasy & Science Fiction, October 1978
"Horn O' Plenty," with Leanne Frahm, Stellar #7, edited by Judy-Lynn Del Rey, Ballantine, 1981
"You Got It," The Magazine of Fantasy & Science Fiction, May 1987