Gregory Benford

Foundation's Fear is a science fiction novel by Gregory Benford, set in Isaac Asimov's Foundation universe. It is the first book of the Second Foundation trilogy, which was written after Asimov's death by three authors, authorized by the Asimov estate.

Great Sky River is a Nebula Award nominated 1987 novel written by author Gregory Benford as a part of his Galactic Center Saga series of books.