24 books • 2 series
Harold Gale was the Executive Director of Mensa before writing and contributing to many puzzle books around the world.
Train Your Brain: Mind-Melting Conundrums
Train Your Brain: Brain-Scrambling Challenges
Train Your Brain: Brain-Bending Challenges
Train Your Brain: Super Tricky Teasers
Train Your Brain: Mind-Twisting Puzzles
MENSA Brain Busters - Number Crunching Puzzles
Rompecabezas Numericos - Mensa
Incremente Su Coeficiente Intelectual - Mensa
Mensa Number Puzzles for Kids
Mensa Boost Your IQ (Mensa adult titles)
Mensa Number Puzzles
Mensa Word Puzzles (Mensa adult titles)
Word Pocket Puzzles (Mini Mensa Mindbenders S.)
Number Pocket Puzzles (Mini Mensa Mindbenders S.)
Mensa Math Games for Kids
Mensa Mighty Mind Benders Boost Your IQ
Mensa
Mensa, Boost Your I. Q.
Mensa Mighty Mindbenders Number Puzzles
Mensa Mighty Mindbenders Word Puzzles
Word Puzzles for Language Geniuses
Number Puzzles for Math Geniuses
"Times" Second Tournament of the Mind
"Times" Tournament of the Mind
