Critical Thinking Co · Pomegranate Communications · Prometheus Books · Sterling
| title | ISBN-13 | year of publica- tion |
|---|---|---|
| Brain Stretchers Bk 3: Advanced | 978-0-89455-633-3 | 1996 |
| Classic Mind Benders | 978-1-4027-2359-9 | 2005 |
| Classic Shrewd Challenges | 978-1-4027-2358-2 | 2005 |
| Geography Q & A Knowledge Cards | 978-0-7649-1106-4 | 2001 |
| Mind-Bending Puzzles 3 Knowledge Cards: Frame Games | 978-0-7649-0701-2 | 1996 |
| Mind-Bending Puzzles 5 Knowledge Cards: Math and Word Problems | 978-0-7649-1054-8 | 2001 |
| Mind Bending Puzzles Calendar: 2001 | 978-0-7649-1145-3 | 2000 |
| Mindstretching Puzzles | 978-0-8069-0694-2 | 1994 |
| Puzzle Power: How to Jump-Start Your Mind | 978-1-59102-203-9 | 2004 |