books: Foundation by Isaac Asimov

Foundation - Kindle edition by Asimov, Isaac. Literature & Fiction Kindle eBooks @ Amazon.com.

Foundation (novel series) - Wikipedia

The Foundation series is a science fiction novel series
written by American author Isaac Asimov.

Foundation Trilogy: 

Foundation (1951)
Foundation and Empire (1952)
Second Foundation (1953)

Foundation's Edge (1982)
Foundation and Earth (1986)

Prelude to Foundation (1988)
Forward the Foundation (1993)