- Variety Puzzle Book: 200 Brain Exercises for Adults Volume 1
- Variety Puzzle Book: 100 Brain Exercises for Adults Volume 3
- Thursday Crossword Puzzles: 52 Relaxing Crossword Puzzles for Adults Volume 2
- Wednesday Crossword Puzzles: 52 Relaxing Crossword Puzzles for Adults Volume 3
- Monday Crossword Puzzles: 52 Relaxing Crossword Puzzles for Adults Volume 4