Books.
The Book of Skulls1972 / Robert Silverberg / Signet / New American LibraryNo imageUndatedBorn with the DeadRobert Silverberg / TorNo image1970Downward to the Earth1970 / Robert Silverberg
Dying Inside1980 / Robert Silverberg / Del Rey / Ballantine
Earth's Other Shadow1973 / Robert Silverberg / Signet / New American Library
The Face of the Waters1992 / Robert Silverberg / Bantam Spectra
Hawksbill Station1970 / Robert Silverberg / AvonNo image1982In Another Country1982 / Robert Silverberg / Tor
The Man in the Maze1969 / Robert Silverberg / Avon
Moonferns and Starsongs1971 / Robert Silverberg / Ballantine BooksNo image1990The New Springtime1990 / Robert Silverberg / Warner Books
Nightwings1979 / Robert Silverberg / Avon
The Reality Trip and Other Implausibilities1972 / Robert Silverberg / Ballantine Books
Recalled to Life1975 / Robert Silverberg / PantherNo image1963The Silent Invaders1963 / Robert Silverberg / Ace BooksNo image1975The Stochastic Man1975 / Robert Silverberg / Fawcett
To Open the Sky1967 / Robert Silverberg / Ballantine Books
Tower of Glass1977 / Robert Silverberg / Panther
Valley Beyond Time1973 / Robert Silverberg / DellNo image1983The World Inside1983 / Robert Silverberg / Bantam Books
Born with the Dead / The Saliva Tree1988 / Robert Silverberg + Brian W. Aldiss / Tor
All Flesh Is Grass1966 / Clifford D. Simak / Berkley Medallion
All the Traps of Earth and Other Stories1963 / Clifford D. Simak / Macfadden Books
A Choice of Gods1973 / Clifford D. Simak / Berkley MedallionNo image1952City1952 / Clifford D. Simak / Gnome Press / Ace