Author:
Warner, Gertrude Chandler, 1890-1979.
Imprint:New York : Scholastic, [1967]
Description128 p. illus. 22 cm.
Note:"First Scholastic printing, 1990" - t.p. verso
Note: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.