| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Now You Know Almost Everything: The Book of Answers, Vol. 3 | 978-1-55002-575-0 (1-55002-575-9) | 2005 | Doug Lennox |
| Now You Know More: The Book of Answers, Vol. 2 | 978-1-55002-530-9 (1-55002-530-9) | 2004 | " |
| Now You Know: The Book of Answers | 978-1-55002-461-6 (1-55002-461-2) | 2003 | " |