9 books • 1 series
Brain Benders for Geniuses
Brain Benders for Einsteins
Brain Benders for Champions
Brain Benders for Eggheads
Large Print Word Puzzles
Pencil Puzzles
Giant Book of Hard-To-Solve Word Puzzles/Giant Book of Hard-To-Solve Mind Puzzles
Word Games (Pocket puzzlers)
Ingenious Puzzles for Word Lovers