• Wake Up & Buy Gold
  Survive & Prosper in the Coming Economic Turmoil
  A book by Jim Mellon & Al Chalabi
  Published 2005
  

• An Appeal to Reason
  A Cool Look at Global Warming
  By Nigel Lawson (Lord Lawson of Blaby)
  

• Making Money
  By Terry Pratchett
  Although we presume that the author intended this to be a humourous book, there are many aspects of it which we believe may be closer to the truth than the average reader would assume.
  Worth reading to liberate and broaden the mind.

• Liar's Poker
  1989, by Michael Lewis.
  Gives an interesting insight in investment banking, derivative traders, etc.

• The Golden Constant
  by Roy W. Jastram & Jill Leyland
  Originally published in 1977, reprinted in 2010 with additional material.

• The Dollar Crisis
  Causes, Consequences, Cures, by Richard Duncan
  Published July 2003, but still relevant today.

Simple Investment Advice - Buy Low and Sell High
June 2006 Price Adjustment Creates Perfect Buying Opportunity