Foundation's EdgeBook - 1991
It is 498 years since the two Foundations came into existence - half-way through the Interregnum planned by Hari Seldon. The Second Foundation has once more successfully concealed its existence so that the laws of psychohistory can operate to usher in a new Empire ruled by the mental sciences.
Publisher: New York : Bantam, 1991, c1982
Edition: Bantam ed
Characteristics: xi, 450 p. ; 18 cm