The Hounds of Tindalos
Frank Belknap Long
Cthulhu Mythos (1)
Flaw
John D. MacDonald
Defense Mechanism
Katherine MacLean
The Living Galaxy
Laurence Manning
Manic Perverse
Winston K. Marks
That Only a Mother
Judith Merril
A Matter of Eclipses
P. Schuyler Miller & Emily Pohl-Weary
Probability Zero (1)
Daemon
C. L. Moore
Doorway Into Time
Miracle in Three Dimensions
Nymph of Darkness
Northwest Smith (6)
Man-Size in Marble / Ebony Frame
E. Nesbit
Mistress of Snarling Death
Paul Chadwick
The Cosmic Gun
Morrison Colladay
The Cosmic Gun (1)
Disowned
Victor Endersby
Eureka!
Malcolm Jameson
Bad Medicine
William Morrison
Light in Darkness
The Barbarians
The Treasure