- Heidi Heckelbeck the secret's out, by Wanda Coven ; illustrated by Priscilla Burris
- Humphrey's treasure hunt trouble, Betty G. Birney ; illustrated by Priscilla Burris
- Henry Heckelbeck and the race car derby, by Wanda Coven ; illustrated by Priscilla Burris
- Humphrey's mixed-up magic trick, Betty G. Birney ; illustrated by Priscilla Burris
- I can be responsible, written by Jenette Donovan Guntly ; illustrated by Priscilla Burris
- Henry Heckelbeck chills out, by Wanda Coven ; illustrated by Priscilla Burris
- Heidi Heckelbeck, by Wanda Coven ; illustrated by Priscilla Burris
- Heidi Heckelbeck has a secret, by Wanda Coven ; illustrated by Priscilla Burris
- Heidi Heckelbeck is so totally grounded, by Wanda Coven ; illustrated by Priscilla Burris
- Henry Heckelbeck spells trouble, by Wanda Coven ; illustrated by Priscilla Burris
- Humphrey's creepy-crawly camping adventure, Betty G. Birney ; illustrated by Priscilla Burris
- Heidi Heckelbeck and the tie-dyed bunny, by Wanda Coven ; illustrated by Priscilla Burris