The Handy Answer Book (1996–2012)
- The Handy Weather Answer Book (1996)
- The Handy Space Answer Book (1997)
- The Handy Physics Answer Book (1998)
- The Handy Religion Answer Book (2001)
- The Handy Math Answer Book (2005)
- The Handy Anatomy Answer Book (2008)
- The Handy Astronomy Answer Book (2008)
- The Handy Geography Answer Book (2009)
- The Handy History Answer Book (2012)