The Mystery of the Missing Man
Enid Blyton
Five Find-Outers (5)
181 Double Jeopardy
Franklin W. Dixon
The Hardy Boys Mystery Stories (181)
The Anguished Dawn
James P. Hogan; James P. Baen
133 Crime in the Kennel
The Hardy Boys Mystery Stories (133)
A Wrinkle in Time
Madeleine L'Engle