How William 'The Refrigerator' Perry started the Super Bowl prop bet craze
The future of NFL betting -- Why player props, not point spreads, are expected to be king - ESPN
How William 'The Refrigerator' Perry started the Super Bowl prop bet craze
Betting on the Super Bowl in the Year of the American Sports Gambler
William Perry and the Cautionary Tale of Life After Football, by Pranav Guru
William 'Refrigerator' Perry: Alcohol, finances haunt Bears great - Sports Illustrated
Super Bowl Prop Bets As Popular As Their Inspiration: Refrigerator Perry
How William 'Refrigerator' Perry changed football - Banner Society
William 'Refrigerator' Perry: Alcohol, finances haunt Bears great - Sports Illustrated
Super Bowl Prop Bets - Super Bowl 58 Prop Betting Guide
Super Bowl LVII prop bets on Patrick Mahomes taking early action, Betting
Refrigerator Perry is struggling, but says he's happy - NBC Sports