Gertrude Chandler Warner

The Alden children save an old woman's house, land, and all the animals in her animal shelter from greedy contractors.

A family, snowbound in a vacation cabin, discovers adventure in surrounding wild life, three children they find in the snow, and a search for a lost recipe.

At the same time that the Alden children's efforts to raise money for a new hospital wing are being sabotaged by nasty tricks, they find their attempts to befriend the new girl Beth frustrated by her strange behavior.

The Aldens try to help a visiting Russian gymnast who is surrounded by mysterious people and events and who seems to have a secret.

While sightseeing in San Francisco, the Boxcar children uncover a mystery involving fishing boats and sabotage.

While visiting the Outer Banks of North Carolina, the Aldens see a mysterious wild horse that may be a ghost.

While visiting the Florida Keys, the Aldens encounter suspicious characters, strange incidents at night, and a plot to steal valuable coral.

While visiting a Navaho Indian reservation in New Mexico, the Aldens try to save a forest under threat of development by proving it is the site of a lost, buried village, but someone is sabotaging their dig.

While on bicycle trip to their aunt's farm, the four Aldens help solve a mystery.

The Alden children hunt for their late grandmother's necklace that has been missing for years.