X Minus One: Zero Hour (November 23, 1955)

By George Lefferts - adaptation & Ray Bradbury

		Title	Writer
1		X Minus One: Zero Hour (November 23, 195	George Lefferts - adaptation & Ray Bradbury	Get Full Audiobook

X Minus One: There Will Come Soft Rains - Zero Hour (December 5, 1956)

Ray Bradbury & George Lefferts - adaptation
X Minus One: Cold Equations (August 25, 1955)

Tom Godwin & George Lefferts - adaptation
X Minus One: Zero Hour (November 23, 1955)

George Lefferts - adaptation & Ray Bradbury
X Minus One: A Pail of Air (March 28, 1956)

Fritz Leiber & George Lefferts - adaptation
X Minus One: C-Chute (February 8, 1956)

George Lefferts - adaptation & Isaac Asimov
X Minus One: Surface Tension (August 28, 1956)

James Blish & George Lefferts - adaptation
X Minus One: Target One (December 26, 1957)

Frederik Pohl & George Lefferts - adaptation
X Minus One: The Girls from Earth (January 16, 1957)

Frank M. Robinson & George Lefferts - adaptation
X Minus One: Tunnel Under the World (March 14, 1956)

Frederik Pohl & George Lefferts - adaptation
X Minus One: Universe (May 15, 1955)

Robert A. Heinlein & George Lefferts - adaptation
X Minus One: A Wind Is Rising (October 3, 1957)

Finn O'Donnevan & George Lefferts - adaptation