The Library of Unruly Treasures

Illustrated by Matt Phelan

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The Borrowers meets Matilida in this funny, winning story of a girl who finds herself an unlikely hero when she stumbles upon a big secret about little creatures. The latest book from the National Book Award winning author of the Penderwicks series.

Gwen MacKinnon's parents are dreadful. Truly, deeply, almost impressively dreadful. So Gwen's not upset at all when she's foisted onto her never-before-seen Uncle Matthew for two weeks. Especially when it turns out he has a very opinionated dog named Pumpkin.

Things take a turn for the weird when Gwen makes a discovery in the local library. A discovery that involves tiny creatures with wings. And no, they're not birds. They're called Lahdukan. But why can only Gwen and the youngest children, gathered…

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August 5, 2025

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Jeanne Birdsall is the National Book Award–winning author of the children's book The Penderwicks and its sequel, The Penderwicks on Gardam Street, both of which were also New York Times bestsellers. She grew up in the suburbs west of Philadelphia, where she attended wonderful public schools. Although Birdsall first decided to become a writer when she was 10 years old, it took her until she was 41 to get started. In the years in between, Birdsall had many strange jobs to support herself while working hard as a photographer. Birdsall's photographs are included in the permanent collections of museums, including the Smithsonian and the Philadelphia Art Museum. She lives with her husband in Northampton, Massachusetts. Their house is old and comfortable, full of unruly…