Three Science Fiction Novellas (Unabridged): optional

The Second Space Patrol MEGAPACK®: 30 Classic Science Fiction Stories

Leviathan Wakes: Book 1 of the Expanse (now a Prime Original series)

Leigh Brackett: Citadel of Lost Ships

Five Steps to Tomorrow

Clean Break

Caliban's War: Book 2 of the Expanse (now a Prime Original series)

Ray Cummings: The Flame Breathers

Night of the Saucers

Crypt-City of the Deathless One

Assignment on Venus

Anton York, Immortal

Lost Sci-Fi Books 1 thru 10

Menace of the Saucers

Nine Sci-fi Stories (Unabridged): optional

Nemesis Games: Book 5 of the Expanse (now a Prime Original series)

Star Ship (Unabridged)

The Sign of the Scarlet Cross