- Massive Book of Mensa Puzzles: Over 500 Puzzles!?A Colossal Collection to Stimulate Your Brain!
- Mensa® Brain Benders for Seniors: 100 Large-Print Puzzles and Activities to Keep Your Mind Young!
- A Connecting Door: Why we need to keep on asking questions and being asked questions
- The World Almanac Mensa First-Class Mind Benders: 101 Puzzles to Take on the Road
- Mensa® Presents: The Big Book of Brain Benders: 200 Puzzles and Riddles from The Smartest Brand in the World―Improve Your Memory, Concentration, ... Skills