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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!
The Giant Yo-Yo Mystery (The Boxcar Children Mysteries, #107)
$4.79
Sale price
$4.79
Regular price
$5.99