Duncan Yo-Yo - The Strong National Museum of Play
National Yo-Yo Museum Celebrates Toy's Ups and Downs - Antique Trader
Did ancient Filipinos really invent the yo-yo? - FlipScience - Top Philippine science news and features for the inquisitive Filipino.
Happy Yo-Yo Day! Yes, Greeks Invented This Too
How do yo-yos work? | Who invented yo-yos?
Cute Animal Print Wooden Yoyo Toys Toy Kids Yo-Yo Creative Cartoon Unicorn Yo Yo Toys For Children 6cm Wooden Yo Yo Ball
Doc Lucky's History of the Yo-Yo | Yo-Yo's
Yo-yos Were Not Invented by Ancient Filipino Warriors
A Rich History of a Simple Toy Called the Yo-Yo
Throwing ourselves into Yo-Yo Heritage Month | National Museum of American History
Who invented yo yo? - Who Invented?
Museum of Yo-Yo History
Promotional Yoyos History
Yo-Yo - History's Best Toys: All-TIME 100 Greatest Toys - TIME
Yo-yo' has a couple of meanings
Yo-yo - Wikipedia
The Yo-Yo | ROTADYNE
The First Depiction Of A Yo-yo Was In Ancient Greece
Did ancient Filipinos really invent the yo-yo? - FlipScience - Top Philippine science news and features for the inquisitive Filipino.
Yo-yos Were Not Invented by Ancient Filipino Warriors
The Secret Life of Yo-Yos - The Atlantic
When Were Yoyos First Invented? – Yoyoing Blog
Yo-yo - Wikipedia
Yo-yo - Wikipedia
Yo-yo - Wikipedia
Call for Ohio-made Duncan Yo-Yos - Ohio History Connection
