Out of this World: A Brief History of the Yo-Yo - The Strong National Museum of Play
Yo-yo - Wikipedia
Happy Yo-Yo Day! Yes, Greeks Invented This Too
Duncan Yo-Yo - The Strong National Museum of Play
A Rich History of a Simple Toy Called the Yo-Yo
Pedro and the Yo-yo: Man and Myth — Positively Filipino | Online Magazine for Filipinos in the Diaspora
Call for Ohio-made Duncan Yo-Yos - Ohio History Connection
Did ancient Filipinos really invent the yo-yo? - FlipScience - Top Philippine science news and features for the inquisitive Filipino.
The Secret Life of Yo-Yos - The Atlantic
National Yo-Yo Museum Celebrates Toy's Ups and Downs - Antique Trader
Yo-Yo - History's Best Toys: All-TIME 100 Greatest Toys - TIME
Yo-yos Were Not Invented by Ancient Filipino Warriors
7 cool things you didn't know about yo-yos | Articles | CBC Kids
Doc Lucky's History of the Yo-Yo | Yo-Yo's
Did ancient Filipinos really invent the yo-yo? - FlipScience - Top Philippine science news and features for the inquisitive Filipino.
Yo-yo' has a couple of meanings
Throwing ourselves into Yo-Yo Heritage Month | National Museum of American History
Cute Animal Print Wooden Yoyo Toys Toy Kids Yo-Yo Creative Cartoon Unicorn Yo Yo Toys For Children 6cm Wooden Yo Yo Ball
How do yo-yos work? | Who invented yo-yos?
Oldest Yo-Yo Dates Back To 400-500 B.C - Ancient Pages
Yo-yo - Wikipedia
Out of this World: A Brief History of the Yo-Yo - The Strong National Museum of Play
Yo-yos Were Not Invented by Ancient Filipino Warriors
