Gertrude Chandler Warner
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Description
"Henry, Jessie, Violet and Benny used to live alone in a boxcar. Now they have a home with their grandfather and are spending the summer on their own private island. There's a mysterious stranger on the island who must keep his identity a secret. And that's not the only surprise in store for the Boxcar Children on Surprise Island!"--Page 4 of cover.
11) Caboose mystery
Author
Description
The Boxcar Children are spending the summer traveling on a train, in their own caboose which has a mysterious history.
16) The mystery girl
Author
Description
While helping run Jerry Taylor's general store, the Alden children investigate his mysterious employee Nancy.