Warner, Gertrude Chandler

When the Alden children spend a week visiting at Pilgrim Village, they uncover the mystery behind the unusual happenings at the historic site.

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

The Alden children suspect someone of trying to sabotage the local dog show.

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

The Boxcar children uncover a mystery when they compete in several contests at the county fair.

On a camping trip to Arizona with their grandfather, the Alden children search for a lost gold mine.

The Alden children investigate when Mrs. Murray's jewels are stolen during a party for the Starlight Skating Troupe.

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 a cruise with their grandfather, the Alden children help discover who is behind the mysterious troubles of the ship--disconnected phone lines, engine trouble, a man overboard--and still have fun sightseeing, eating, and swimming.