Macfadden paperback, 1969. Cover by Jack Faragasso. Rear cover/synopsis.

NEL paperback, 1980. Cover by Tim White. Rear cover/synopsis.

NEL paperback, 1980. Cover by Gerald Grace. Rear cover/synopsis.

Pocket Books, Inc. paperback, 1962. Cover artwork uncredited. Rear cover, synopsis, etc.

DAW paperback, 1972. Cover by Karel Thole.

Panther SF paperback, 1975. Cover artist uncredited. Possibly Bob Haberfield. "200,000,000 YEARS A.D.   The old continents of ...

Sphere SF paperback, 1985 reprint. Cover painting by Bruce Pennington. "WORLDS IN CRISIS   Whoever it was that the Dzan had di...

NEL paperback, October 1980. Illustration: Gerald Grace. "In a future world women are the dominant sex and men wear chemically t...

NEL paperback, April 1980. Illustration: Gerald Grace. "For thousands of years Man has retreated behind the barrier - evolving a...

Granada / Panther SF paperback, 1980 reprint. Cover illustration by Peter Jones. "THE HOPE OF MAN...   A mighty space cruiser...

Sphere paperback, 1974 reprint. Cover painting by Bruce Pennington. "What was the follower?  Gosseyn knew the creature threat...

NEL paperback, 1980 reprint. Illustration: Gerald Grace. " A lone scientist working on man's one desperate chance against co...

NEL paperback, 1981. Illustration: Gerry Grace. "Time had collapsed. For a brief instant, like the sudden reopening of a disused...

Sphere SF paperback, 1976. Cover by Chris Foss. "In the far distant future, the spaceship Star Cluster is searching for certain ...