- Girls don't have cooties, by Nancy Krulik ; illustrated by John & Wendy
- Krulik, Nancy E, Katie Kazoo, switcheroo, 03
- On your mark, get set, laugh!, by Nancy Krulik ; illustrated by John & Wendy
- Anyone but me, by Nancy Krulik ; illustrated by John & Wendy
- Krulik, Nancy E, Katie Kazoo, switcheroo, 28
- Out to lunch, by Nancy Krulik ; illustrated by John & Wendy
- Krulik, Nancy E, Katie Kazoo, switcheroo, 2
- Camp rules!, by Nancy Krulik ; illustrated by John & Wendy
- Oh, baby!, by Nancy Krulik ; illustrated by John & Wendy
- Krulik, Nancy E, Katie Kazoo, switcheroo, super special!
- Krulik, Nancy E, Katie Kazoo, switcheroo, 15
- Any way you slice it, by Nancy Krulik ; illustrated by John & Wendy
- Love stinks!, by Nancy Krulik ; illustrated by John & Wendy
- Krulik, Nancy E, Katie Kazoo, switcheroo, 04
- Krulik, Nancy E, Katie Kazoo, switcheroo, 5
- Krulik, Nancy E, Katie Kazoo, switcheroo, 7
- No biz like show biz, by Nancy Krulik ; illustrated by John & Wendy
- Krulik, Nancy E, Katie Kazoo, switcheroo, 1
- Krulik, Nancy E, Katie Kazoo, switcheroo, 24
- Krulik, Nancy E, Katie Kazoo, switcheroo, 11
- Super burp!, by Nancy Krulik ; illustrated by Aaron Blecha
- Krulik, Nancy E, Katie Kazoo, switcheroo, 8
- On thin ice, by Nancy Krulik ; illustrated by John & Wendy
- Open wide, by Nancy Krulik ; illustrated by John & Wendy
- Krulik, Nancy E, George Brown, class clown, 1
- I'm game!, by Nancy Krulik ; illustrated by John & Wendy
- A whirlwind vacation, by Nancy Krulik ; illustrated by John & Wendy
- Krulik, Nancy E, Katie Kazoo, switcheroo, 19
- Bad moooove!, by Nancy Krulik ; art by Ben Balistreri
- Krulik, Nancy E, Princess Pulverizer, 2
- Krulik, Nancy E, Katie Kazoo, switcheroo, 25
- Write on!, by Nancy Krulik ; illustrated by John & Wendy
- Krulik, Nancy E, Katie Kazoo, switcheroo, 9
- Krulik, Nancy E, Katie Kazoo, switcheroo
- Krulik, Nancy E, George Brown, class clown, 2
- Doggone it!, by Nancy Krulik ; illustrated by John & Wendy
- Get lost!, by Nancy Krulik ; illustrated by John & Wendy
- Krulik, Nancy E, Katie Kazoo, switcheroo, 18
- Krulik, Nancy E, George Brown, class clown
- I hate rules!, by Nancy Krulik ; illustrated by John & Wendy
- Krulik, Nancy E, Katie Kazoo, switcheroo, 23
- Krulik, Nancy E, Katie Kazoo, switcheroo, 6
- Krulik, Nancy E, Princess Pulverizer, 1
- Friends for never, by Nancy Krulik ; illustrated by John & Wendy
- Krulik, Nancy E, Katie Kazoo, switcheroo, 12
- Grilled cheese and dragons, Nancy Krulik ; art by Ben Balistreri
- Karate Katie, by Nancy Krulik ; illustrated by John & Wendy
- Krulik, Nancy E, Katie Kazoo, switcheroo, 22
- Krulik, Nancy E, Katie Kazoo, switcheroo, 14
- Krulik, Nancy E, Jack gets a clue, 4