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.
Houseboat Mystery
This book might be part of the Boxcar Children (12) series.
Part of Boxcar Children (3)

Gertrude Chandler Warner: Houseboat Mystery (1990, Perfection Learning Prebound)
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unknown binding
Published Sept. 18, 1990 by Perfection Learning Prebound.
Subjects
- Children: Grades 4-6