Ace books, 1966. Cover by Gray Morrow. Cover by Jack Gaughan.

Ace paperback, 1965. Cover painting by Gray Morrow. "Fans of Andre Norton are familiar with the planet Warlock and its shimmerin...

Ace Books paperback, 1967. Cover by Gray Morrow. "The Zoromes had found a way to immortality and thereby were able to set out on...

Ace paperback, 1967. Cover by Gray Morrow. "Forty million years after the death of Earth, one man's brilliant mind lives on ...

Cover by Gray Morrow from The Hour Before Earthrise .

Cover by Gray Morrow for On Messenger Mountain .

Cover painting by George Schelling for Soldier, Ask Not . Interior illustration by Gray Morrow, from Soldier, Ask Not .

Cover painting by Gray Morrow for Cindy-Me. Interior illustration by John Giunta for The Moonrakers . Interior illustration by ...