Mandie (1987–2008)
- Mandie and the Hidden Treasure (1987)
- Mandie and the Holiday Surprise (1988)
- Mandie and the Midnight Journey (1989)
- Mandie and the Washington Nightmare (1989)
- Mandie and the Shipboard Mystery (1990)
- Mandie and the Singing Chalet (1991)
- Mandie and the Mysterious Fisherman (1992)
- Mandie and the Windmills Message (1992)
- Mandie and the Angel's Secret (1993)
- Mandie and the Fiery Rescue (1993)
- Mandie and the Dangerous Imposters (1994)
- Mandie and the Invisible Troublemaker (1994)
- Mandie and Her Missing Kin (1995)
- Mandie and the Courtroom Battle (1996)
- Mandie and the Schoolhouse's Secret (1996)
- Mandie and Jonathan's Predicament (1997)
- Mandie and the Unwanted Gift (1997)
- Mandie and the Long Goodbye (1998)
- Mandie and the Jumping Juniper (2008)
- Mandie and the Silent Catacombs (2008)