Robert Silverberg

The Time Hoppers is a science fiction novel by American writer Robert Silverberg, first published by Doubleday in 1967. The plot concerns Joe Quellen, a 25th-century bureaucrat charged with investigating "hoppers", travelers from the future whose presence in the past has been documented for hundreds of years, and his …

Starman's Quest is a science fiction novel by author Robert Silverberg. It was published in 1958 by Gnome Press in an edition of 5,000 copies, of which only 3,000 were bound. It was reprinted as a second edition in hardcover by Meredith Press in 1969.