The Martian Sphinx
John Brunner
Mask of Chaos
John Jakes
The Mask of the Sun
Fred Saberhagen
Master of Life and Death
Robert Silverberg
Masters of Evolution
Damon Knight
A Matter of Time
Glen Cook
Meeting at Infinity
Memory Blank
John E. Stith
Men on the Moon
Donald A. Wollheim
Merlin's Booke
Jane Yolen
Message from the Eocene
Margaret St. Clair
Metrophage
Richard Kadrey
Milk and Cookies
Rob Thurman
The Million Year Hunt
Kenneth Bulmer
The Mind Monsters
Jack Owen Jardine & Julie Ann Jardine