George J. Summers

• The Great Book of Puzzles and Teasers
• Mind puzzlers
• Mind teasers, logic puzzles & games of deduction
• The great book of mind teasers & mind puzzlers
• Brain Teasers (pocket puzzlers)
• Mind bafflers
• New puzzles in logical deduction
• Classic Logic Puzzles
• Logical Deduction Puzzles
• Test Your Logic
• Test your logic
• The Great Book of Mind Teasers & Mind Puzzlers