Author(s): Gertrude Chandler Warner
Format: Paperback
No. of Pages: 128
Publisher: Albert Whitman & Company
Language: English
Date Published: 2006-05-30
Dimensions: 132.1 x 188 x 10.2mm
Publication City/Country: Morton Grove, United States
Edition:
Illustrations:

The Aldens are helping one of Grandfather's friends break a world record by building the world's largest yo-yo! But someone follows them, and then the plans for the yo-yo turn up missing. Someone is trying to sabotage the yo-yo before it's launched!