Secret World of Alex Mack
11. Junkyard Jitters! (1996)
14. High Flyer! (1997)
24. Computer Crunch! (1998)

Star Trek : Starfleet Academy
3. Quarantine (1997)
10. Loyalties (1996)

Sabrina, the Teenage Witch : Salem's Tails
2. Teacher's Pet (1998)

The National Science Foundation: Know Your Government (1989)
Clocks in the Rocks (1990)
The New York Public Library Science Desk Reference Book (1995)
How the New Technology Works: A Guide to High-tech Concepts (1997)
The Oryx Guide to Natural History: The Earth And All Its Inhabitants (1999) (with Thomas E Svarney)
Skies of Fury: Weather Weirdness Around the World (1999) (with Thomas E Svarney)
Handy Dinosaur Answer Book (1999) (with Thomas E Svarney)
Through The Telescope (1999) (with Michael R Porcellino)
The Handy Ocean Answer Book (1999)