- Stanley the mailman, William Bee
- Max & Mo make a snowman, by Patricia Lakin ; illustrated by Brian Floca
- Groundhog Day, written by Margaret McNamara ; illustrated by Mike Gordon
- Stanley the farmer, William Bee
- Secrets according to Humphrey, Betty G. Birney
- Secrets according to Humphrey, Betty G. Birney
- Adventure according to Humphrey, Betty G. Birney
- Hamster Holmes, a big-time puzzle, by Albin Sadar ; illustrated by Valerio Fabbretti
- Mysteries according to Humphrey, Betty G. Birney
- Out to lunch, by Nancy Krulik ; illustrated by John & Wendy
- Anyone but me, by Nancy Krulik ; illustrated by John & Wendy
- Happy birthday, Hamster, by Cynthia Lord ; pictures by Derek Anderson
- Stanley's store, William Bee
- Hamster Holmes, by Albin Sadar ; illustrated by Valerio Fabbretti
- Friendship according to Humphrey, Betty G. Birney
- Hamster Holmes, combing for clues, by Albin Sadar ; illustrated by Valerio Fabbretti
- Hamster Princess, of mice and magic, by Ursula Vernon
- Hamster Holmes, a mystery comes knocking, by Albin Sadar ; illustrated by Valerio Fabbretti
- Summer according to Humphrey, Betty G. Birney
- Hamster Holmes, on the right track, by Albin Sadar ; illustrated by Valerio Fabbretti
- Imagination according to Humphrey, Betty G. Birney
- Summer according to Humphrey, Betty G. Birney
- Stanley's school, williambee
- School days according to Humphrey, Betty G. Birney
- Stanley's lunch box, williambee
- Stanley's park, williambee
- Max and Mo go apple picking, by Patricia Lakin ; illustrated by Brian Floca
- Spring according to Humphrey, Betty G. Birney
- The world according to Humphrey, Betty G. Birney
- Life according to Og the frog, Betty G. Birney
- Whiskerella, by Ursula Vernon
- Humphrey's playful puppy problem, Betty G. Birney ; illustrated by Priscilla Burris
- Humphrey's treasure hunt trouble, Betty G. Birney ; illustrated by Priscilla Burris
- Hamsters make terrible roommates, by Cheryl B. Klein ; illustrated by Abhi Alwar
- The world according to Humphrey, Betty G. Birney
- Spring according to Humphrey, Betty G. Birney
- The best seat in second grade, story by Katharine Kenah ; pictures by Abby Carter
- Giant trouble, by Ursula Vernon
- Memoirs of a hamster, by Devin Scillian ; illustrated by Tim Bowers
- Humphrey's mixed-up magic trick, Betty G. Birney ; illustrated by Priscilla Burris
- Captain Awesome to the rescue!, by Stan Kirby ; illustrated by George O'Connor
- Stanley's garage, williambee
- Surprises according to Humphrey, Betty G. Birney
- Humphrey's school fair surprise, Betty G. Birney ; illustrated by Priscilla Burris
- Hamster and cheese, Colleen AF Venable ; illustrated by Stephanie Yue
- Ratpunzel, by Ursula Vernon
- Hamster Holmes, afraid of the dark?, by Albin Sadar ; illustrated by Velrio Fabretti
- Adventure according to Humphrey, Betty G. Birney
- Trouble according to Humphrey, Betty G. Birney
- Trouble according to Humphrey, Betty G. Birney