Arrow paperback, 1978. Cover artwork by Chris Foss. Rear cover/synopses.

Arrow paperback, 1978. Cover artwork by Chris Foss. Rear cover and synopsis.

Avon paperback, fifth printing, April 1970. Cover by Don Crowley. "FIRST CONTACT!   The glowing ovoid plummeted earthwar...

Penguin SF paperback, 1972. Cover design by David Pelham. "When Baines, a megalomaniac arms manufacturer, employs for a secret p...

Arrow paperback, 1975. Cover painting by Chris Foss. "When John Martels' new radio telescope obstinately refuses to function...

Arrow SF paperback, 1972. Cover artwork by Chris Yates. "Pantropy - total biological engineering - Adapted Man, adapted ante-nat...

First Avon printing, Feb 1970. Cover artist uncredited. "The epic cyclic history of the future is now brought together in one vo...