George Nissen: Inventor of the trampoline | The Independent | The Independent
How the Trampoline Came to Be | Innovation| Smithsonian Magazine
The Weird, Forgotten, Awesome Sport of Spaceball - Atlas Obscura
Commercial Nissen Trampoline 10x17 ft Gymnastics Or Diving, Rectangular | eBay
1956 Nissen Thumper Trampoline Advertisement Cedar Rapids, Iowa | eBay
JumpKing Pro-Series Rectangular Trampoline 10' x 16' - No Other Trampoline Can Compete: Double The Springs, Patented V-Shaped Spring Arrangement, Recreational Trampolines - Amazon Canada
George Nisson, inventor of the trampoline, lives in San Diego's UTC | San Diego Reader
Biography of George Nissen
George Nissen: Inventor of the trampoline | The Independent | The Independent
Nissen Leisure Ltd on Twitter: "Blue is such a popular colour for our equipment but we rarely make it in our ice blue PVC so it's been nice to make a few
File:Dian Nissen jumping at a trampoline park.jpg - Wikimedia Commons