Who Made That Trampoline? - The New York Times
In 1936 the trampoline was invented. It was created by George nissen. It was used for gymnast and tumblers. It was made of strong… | Trampoline, Old circus, History
George Nissen and the Trampoline – Lichtenberger Engineering Library
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How the Trampoline Came to Be | Innovation| Smithsonian Magazine
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Trampoline - Wikipedia
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How the Trampoline Came to Be | Innovation| Smithsonian Magazine
Who Made That Trampoline? - The New York Times
The History of Trampoline - Dreamland Manufacturer
