- of Yo-Yo History
- Yo-yo -
- Who Invented Yo-Yo? Who Invented the Moon - dafilms.com | watch online
- of Yo-Yo History
- Yo-yo -
- What was the 1st ever description of a history? - Quora
- Pedro and the Yo-yo: Man Myth — Positively Filipino Magazine for Filipinos in the Diaspora
- Duncan Yo-Yo - The National Museum of Play
- Throwing ourselves into Yo-Yo Heritage | National Museum of American History
- of Yo-Yo History
- Yo-yo -
- The First Depiction Of A Yo-yo Was
- Did ancient Filipinos really invent the yo-yo? - FlipScience Top Philippine science news and features for Filipino.
- Chinese Culture & Invention of the Yo-Yo - Synonym
- Did ancient Filipinos really invent the yo-yo? - FlipScience Top Philippine science news and features for Filipino.
- Smithsonian Insider Duncan Genuine Yo-Yo, 1930s | Smithsonian
- Did ancient Filipinos really invent the yo-yo? - FlipScience Top Philippine science news and features for Filipino.
- I Invented the Yo-Yo! LaiGubalane on DeviantArt
- When Was The Yoyo Invented? [When, & How]
- The Perfumed Nightmare Who Invented Yo-Yo? Who Invented Moon Buggy? - Harvard Archive
- When Yoyos First Invented? – Blog