Interesting Investment book: "Fail-Safe Investing: Lifelong Financial Security in 30 Minutes", by  Harry Browne.  See http://www.harrybrowne.org.
Check reviews on Amazon.com at http://www.amazon.com and Barnes and Noble at http://search.barnesandnoble.com.
Seems like a good book to me; some of the critics accuse him of doing things wrong that he isn't actually doing. The only caveat I have is that I couldn't read the book in 30 minutes or follow its advice in 30 minutes; however I found I could read and understand most of it in that amount of time.
The Permanent Portfolio, a suggested family of no-load mutual funds: http://www.PermanentPortfoliofunds.com. Historical performance: http://www.harrybrowne.org/permanentportfolioresults.htm.