Henry Carter Hull

The Boxcar Children investigate when they find a secret message in their neighbor's path, a message that leads them on a hunt for a hidden object. When the children uncover a strange puzzle in a friend's back yard, it's the start of a "spy game" leading to gold. But first they must make sense of an old photo and a riddle, and learn just who is behind this mystery within a mystery.

At an old library, the Alden children discover a boy who needs their help and a stranger who is after a valuable object they found in the library.

While spending two days touring a zoo to see the baby animals, the four Alden children, aged six to fourteen, help catch an escaped monkey, participate in a photography contest, and investigate a missing camera.

The Alden children set out to solve the mystery of who is trying to steal Mama Tova's secret cupcake recipe.

First published in 1924, "The Box-Car Children" is the beloved children's classic by American grade school teacher and author, Gertrude Chandler Warner. It is the story of four orphaned siblings, Henry, Jessie, Violet, and Benny, and their adventures living in an abandoned boxcar in the forest. The children are having fun while living in the boxcar at first, though several adults in the community are aware of their situation and are keeping an eye...