- Krulik, Nancy E, George Brown, class clown
- Katie Kazoo switcheroo, Nancy Krulik, Books 1-2
- Doggone it! ;, Any way you slice it, by Nancy Krulik ; illustrated by John & Wendy
- Krulik, Nancy E, Katie Kazoo, switcheroo, 14
- Krulik, Nancy E, Mrs. Frogbottom's field trips, 1
- Krulik, Nancy E, Katie Kazoo, switcheroo, 22
- Red, white, and-- achoo!, by Nancy Krulik ; illustrated by John & Wendy
- Krulik, Nancy E, Katie Kazoo, switcheroo, 10
- Hide and go beak, Nancy Krulik ; illustrated by Charlie Alder
- It's snow joke!, by Nancy Krulik ; illustrated by John & Wendy
- Krulik, Nancy E, Katie Kazoo, switcheroo, 31
- Krulik, Nancy E, Great mathemachicken, 3
- Witch switch!, by Nancy Krulik ; illustrated by John & Wendy
- Trouble magnet, by Nancy Krulik ; illustrated by Aaron Blecha
- Krulik, Nancy E, Katie Kazoo, switcheroo, 33
- No bones about it, by Nancy Krulik ; illustrated by John & Wendy
- No messin' with my lesson, by Nancy Krulik ; illustrated by John & Wendy
- Quiet on the set!, by Nancy Krulik ; illustrated by John & Wendy
- Krulik, Nancy E, Katie Kazoo, switcheroo, 13