Coronet paperback, 1979. Cover artwork by Chris Foss. Rear cover/synopsis.

"... he turned, fighting to stay on his feet. Under a hooded robe of white cloth with a touch of iridescence in it: a bent human form.....

"At the far end of the hall a tall door swung open. Through it strode Gogra: a giant of a robot, twelve foot tall and broad to match. G...

"From the edges of the wide floor they hailed him and from the open galleries above, their depthless eyes glittering, their narrow ophi...

" Her face was ageless - neither young nor old; free from time, free from the etching acid of the years. She might have been born yest...

"...science fiction, like any fiction, cannot help drawing on the conventions of the past. The writers do it; the illustrators do it. T...

"...suddenly in a bookshop in the pages of an English magazine I found splashed in a thousand colours what I had believed impossible t...

Ace paperback, 1964. Cover by Frank Frazetta. Interior art, also by Frank Frazetta.

Ace paperback, 1967. Cover art by Ed Emsh.

Ace pb, 1965. Cover by Jack Gaughan. Cover by Jack Gaughan - again.

DAW pb, 1974. Cover by (Frank) Kelly Freas.

DAW pb, 1973. Cover by (Frank) Kelly Freas.

Grafton paperback, 1993. Cover illustration by Steve Crisp.

Ace paperback, 1967. Cover: John Schoenherr.

Corgi paperback, 1973. Cover credit: Solution .