On This Day June 6: National Yoyo Day — The Greeks Invented This Too! - The Pappas Post
How do yo-yos work? | Who invented yo-yos?
Oldest Yo-Yo Dates Back To 400-500 B.C - Ancient Pages
Link #87: Ancient Filipinos Used the Yoyo As a Weapon! | Always Learning!
YoYoFactory — History of Yoyo
Pedro Flores (1896-1963) - Inclusity
Smithsonian Insider – Duncan Genuine Yo-Yo, 1930s | Smithsonian Insider
Who Invented The Yoyo? Who Invented the Moon Buggy? - Doclisboa 2018
Yo-Yo Maker: Pedro Flores - ABDO
Yo-yo - Ten Random Facts
Duncan Yo-Yo Hero & History of Yo-Yos with Takeshi Kamisato - YouTube
The Secret Life of Yo-Yos - The Atlantic
Throwing ourselves into Yo-Yo Heritage Month | National Museum of American History
Museum of Yo-Yo History
Who invented yo yo? - Who Invented?
Flores Yo-Yo Invented by Pedro Flores, Yo-yo's have been very popular since it was made in the 1920's. The true meaning of the name "yo-yo" m… | Yoyo, Yo-yos, Yo-yo
Yo Yo Ups and Downs | Lemelson Center for the Study of Invention and Innovation
Yo-yo - Wikipedia
Out of this World: A Brief History of the Yo-Yo - The Strong National Museum of Play
Yo-Yo - History's Best Toys: All-TIME 100 Greatest Toys - TIME
Yo-yo - Wikipedia
Yo-yo - Wikipedia
Did ancient Filipinos really invent the yo-yo? - FlipScience - Top Philippine science news and features for the inquisitive Filipino.
Yo-yo - Wikipedia
Happy Yo-Yo Day! Yes, Greeks Invented This Too
