MacDonald, John D.,
--Susceptiblity, January, 1951.
--Common Denominator, July, 1951.
--Game for Blondes, October, 1952.

Macfarlane, Wallace,
--220 - Advanced Field Exploration, March-April, 1972.
--Robbie and David and Little Dahl, May-June, 1972.
--Changing Woman, September-October, 1972. *

MacLean, Katherine,
--Contagion, October, 1950. (novelet)
--Games, March, 1953.

Malzberg, Barry,
--Gehenna, March, 1971. *

Marks, Winston,
--Backlash, January, 1954. (novelet)

Martin, George R. R.,
--A Beast for Norn, September/October, 1979. (novelette)

Martin, Peter,
--The Psychic, June/July, 1979. (novelette)

Mason, Douglas R.,
--Locust Years, November, 1968.
--The Phaeton Condition, May, 1973. (review)

Mason, Ernst, (Frederik Pohl)
--The Martian Star-Gazers, February, 1962.
--Earth Eighteen, April, 1964.

Matheson, Richard, (1926- )
--Third from the Sun, October, 1950.
--The Waker Dreams, December, 1950. (When the Waker Sleeps)
--Lover When You're Near Me, May, 1952.
--Shipshape Home, July, 1952.
--One for the Books, September, 1955.

McCaffrey, Anne,
--The Ship Who Killed, October, 1966.
--The Weather on Welladay, March, 1969.
--Sittik, July, 1970.

McCann, Edson, (Frederik Pohl and Lester del Rey)
--Preferred Risk (Part 1), June, 1955.
--Preferred Risk (Part 2), July, 1955.
--Preferred Risk (Part 3), August, 1955.
--Preferred Risk (Conclusion), September, 1955.

McConnell, James,
--Life Sentence, January, 1953.

McCulloch, Dewey W.,
--The Population Explosion at Lake Stover, January, 1979.

McKimmey, James,
--The Young Priests of Adytum 199, April, 1967.

Merrill, Judith,
--see Judd, Cyril

Merwin, Sam, Jr.,
--Judas Ram, December, 1950.

M'Intosh, J. T., (James Murdoch MacGregor)
--Made in U.S.A., April, 1953. (novelet)
--Men Like Mules, February, 1954. (novelet)

Morris, G. A.,
--The Carnivore, October, 1953.

Morrison, William, (Joseph Samachson, 1906-1980)
--The Model of a Judge, October, 1953. *