Notes
Lest We Forget Thee, Earth, a standalone novel by Robert Silverberg writing as Calvin M. Knox.

This volume is a "dos-à-dos" omnibus in the Ace Double series. It also includes People Minus X by Raymond Z. Gallun.

A fixup novel based on a series of three short stories published in Science Fiction Adventures:

• Chalice of Death (June 1957)
• Earth Shall Live Again! (December 1957)
• Vengeance of the Space Armadas (March 1958)

Previously published in a shorter form as We, the Marauders in Science Fiction Quarterly (February 1958).

Publisher's Blurb – Page One
RESURRECTION DAY NUMBER TWO!

A hundred thousand years ago, there had been a planet named Earth. It had been a proud world ruling a thousand vassal stars. But its stellar empire had turned upon it, annihilated their conquerors, and wiped the name of Earth from the maps of space.

But Earthmen still survived . . . a strange race of worldless men and women, by tradition advisers to rulers, but never ruling themselves. Wanderers through a myriad planets, their origin was a half-forgotten legend.

That was the situation when a strange quirk of fate sent Earthman Hallam Navarre on an interstellar wild goose chase. He had to bring back a strictly mythical treasure to his otherworld ruler – or die. But the prize he stumbled on was greater than any myth. It was a planet no one believed in and a real treasure no otherworld monarch could possess.

Alternative Title
The Chalice of Death – Paizo Publishing / Planet Stories 2012 Trade Paperback Edition, ISBN 9781601253774. Cover illustration by Kieran Yanner.