These Vintage Photos Prove That Roller Derby Has Always Been Cool

Building the Industry

Seltzer began to hold his own dance marathons, dubbed "walkathons" due to the fact that contestants would usually just shuffle around for the duration of the contests. Seltzer's walkathons could last as long as 40 days with hundreds of unemployed contestants hoping to win cash prizes.

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The More You Know

  • If you heat up a magnet, it will lose its magnetism.
  • Domino's Japan trained reindeer to deliver pizza.
  • Mount Everest is bigger now than the last time it was measured.
  • The first TV commercial didn't air until the 1940s.
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