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File:Trampoline jumping - 2.JPG - Wikimedia Commons
/cdn.vox-cdn.com/uploads/chorus_image/image/59461293/868496430.jpg.0.jpg "Trampolines: The dangerous and deadly history revealed - Polygon")
Trampolines: The dangerous and deadly history revealed - Polygon
/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer/d1/15/d115f11f-64f3-454d-b60b-35ea891a2226/george_nissen_on_trampoline-main.jpg "How the Trampoline Came to Be | Innovation| Smithsonian Magazine")
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Trampoline History Facts - History of the Trampoline
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