Robert Allen
1949
Zen reflections
Improve your memory
Mensa mighty mind benders
Mensa presents know yourself
Mensa presents the ultimate mental challenge
Mighty brain teasers
The biggest book of games for one ever!
1001 Mensa puzzles
365 conseils du Bouddha
A guide to the art of writing
Mensa assess your personality
The amazing 1000 puzzle challenge