The blackmail machine.
By: Illustrated by Victoria de Larrea.
Contributors: De Larrea, Victoria, illus.
Publisher: Macmillan
Published: 1968
Place of publication: New York
Language: eng
Number of pages: 182
Subjects: Fantasy.
Description: Five children, a farmer, and a dispossessed lady form a secret society, mobilize themselves in their motorized flying treehouse, and try to change the world.