From The SF Gateway, the most comprehensive digital library of classic SFF titles ever assembled, comes an ideal sample introduction to the fantastic work of Robert Silverberg, one of the most prolific authors of all time. Highly acclaimed, Silverberg has won and been nominated for the Hugo and Nebula awards dozens of times as both writer and editor, and in 2004 received the SFWA Grand Master Award. This omnibus contains three of his award-winning novels: Nightwings, A Time of Changes and Lord Valentine's Castle.