Outstanding Lateral Thinking Puzzles by Des Machale and Paul Sloane (2005, Perfect) for sale online | eBay
Outside-The-Box Lateral Thinking Puzzles by Sloane, Paul, MacHale, Des: Very Good (2013) | Better World Books
Paul Sloane's list of Classic Lateral Thinking Puzzles with Answers | Interview Puzzles with answers. | Lateral thinking puzzles, Lateral thinking, Puzzles
Lateral Thinking Puzzlers by Paul Sloane
CL065: Paul Sloane on lateral thinking puzzles - James Taylor
Great Lateral Thinking Puzzles by Paul Sloane and Des MacHale