Marty Moose: First Class Mischief -- Claire Powell, Hardcover

Who knew delivering the mail could be so perilous? A silly, mischievous story of independence, self-confidence, bravery, and friendship.

Just because you're small doesn't mean you can't be brave.

That's the advice Great-Aunt Ada gives Marty Moose for his first day on the job as a mailmouse for the Little Ditch Post Office. With his mailbag in hand, Marty is ready to follow in her footsteps, but filling them proves difficult even with the help of a scrappy and energetic bunny named Nibbles. When a pair of pesky neighbors prevents him from delivering his last package, Marty and his new friend Nibbles must figure out together how to finish the job, even if that means breaking the rules. With lively, funny, and characterful illustrations and a charming narrative voice, this series first is just right for newly confident readers.

Author: Claire Powell
Publisher: Candlewick Press (MA)
Published: 02/10/2026
Pages: 160
Binding Type: Hardcover
Weight: 1.25lbs
ISBN: 9781536247800
Audience: Ages 9-12

Review Citation(s):
School Library Journal 10/01/2025 pg. 79
Kirkus Reviews 11/15/2025
Publishers Weekly 11/17/2025

About the Author
Claire Powell is a children's book maker, character designer, and illustrator. This is her authorial debut. Her collaborations with Beth Lincoln, Kes Gray, and Simon Farnaby were all bestsellers, and she has also illustrated books for Dermot O'Leary, Jeanne Willis, Peter Bently, and Michelle Robinson. Claire Powell lives in Derbyshire, England.