David Cunningham

The Boxcar Children are spending the summer traveling on a train, in their own caboose which has a mysterious history.

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

The Boxcar Children are spending the summer in a lighthouse on the New England coast, where a mysterious woman walks the grounds late at night and many more strange things happen that they attempt to explain.

Two brothers take summer jobs at a department store where a series of peculiar events brings them under suspicion.

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.

A friendly writer with a metal detector, the mysterious inhabitants of a tower house, and the discovery of a locket in the sand are ingredients for the Aldens' latest mystery.