Robert Silverberg

The World Inside is a science fiction novel written by Robert Silverberg and published in 1971. The novel's first chapter was first published in 1970 as a short story titled "A Happy Day in 2381". The World Inside was nominated for a Hugo Award in 1972. On March 2, 2010, Orb Books published this title as a trade …

Three complete novels of mystery in space from Grand Master Robert Silverberg explode back into print for the first time in decades in this thrilling new Planet Stories collection! These extremely scarce tales originally appeared in the legendary Ace Double novel series, and represent a future multiple Hugo and Nebula …

In Illinois, the one-hundred-foot Cahokia Mound spreads impressively across sixteen acres, and as many as ten thousand more mounds dot the Ohio River Valley alone. The Mound Builders traces the speculation surrounding these monuments and the scientific excavations which uncovered the history and culture of the ancient …