Paul Sloane ; Des MacHale Related books Challenging Lateral Thinking Puzzles Sterling Pub Co Inc • 1993 Improve Your Lateral Thinking: Puzzles To Challenge Your Mind Sterling Pub Co Inc • 1995 Intriguing Lateral Thinking Puzzles Sterling Pub Co Inc • 1996 Lateral Thinking Puzzlers Sterling Pub Co Inc • 1992 Lateral Thinking Puzzles: Pocket Puzzles Sterling Pub Co Inc • 2000 Tricky Lateral Thinking Puzzles Sterling Pub Co Inc • 1999