Warner, Gertrude Chandler

While helping out part time in a pet shop, the Alden children discover an employee who is smuggling and selling exotic animals.

The Alden children investigate various mix-ups at a zoo run by their grandfather's friend in an effort to save it not only from pranksters but also from the town council.

While helping run Jerry Taylor's general store, the Alden children investigate his mysterious employee Nancy.

The Alden family rents a houseboat to drift down the river, and encounters a mystery in the little towns along the river, involving a fast black car.

While visiting the seaport town of Ragged Cove, Massachusetts, the Alden children find the ship's log of the Flying Cloud, shipwrecked in 1869, supposedly during a mutiny.

The Boxcar children investigate when ice cream and other items start disappearing from their favorite ice cream parlor.

While canoeing and backpacking near Timberwolf Lake, the Aldens receive strange warnings to stay away from the area and stumble upon clues to a missing cache of stolen coins.

The boxcar children uncover a double mystery involving an old friend of Aunt Jane's.

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.