Measureless to Man
Marion Zimmer Bradley
Measure for a Loner
Jim Harmon
A Matter of Magnitude
Al Sevcik
Master of Chaos
Michael Moorcock
Martian V.F.W.
G. L. Vandenburg
Mars Confidential
Howard Browne
The Marooner
Charles A. Stearns
Mariana
Fritz Leiber
The Man with the X-Ray Eyes
Leonard G. Spencer
The Man who Talked to Bees
Randall Garrett
The Man Who Knew Everything
The Man Who Hated Mars
The Man Who Could Not Die
E. K. Jarvis
Man of Many Bodies
Robert Silverberg
Man Made
Albert Teichner
Make Room for Me!
Theodore Sturgeon