Pro Football Journal: Rest In Peace—Dave Butz
Dave Butz, All-Pro Defensive Lineman for Washington, Dies at 72 - The New York Times
Washington Redskins Fans Collected Memorabilia for Years. What Now? - The New York Times
Washington Commanders: Legendary defensive tackle Dave Butz dies at 72
USA TODAY Sports - Former Washington defensive tackle Dave Butz, who won two Super Bowls with the team, has died at 72, the Commanders announced Friday.
Dave Butz, Super Bowl champion and Washington DC football legend, dies at 72
David Butz: Washington Commanders Legend Dies At 72 - YellowDanfo
Hall of Famer Dave Butz Passes Away - National Football Foundation
Former Washington Defensive Lineman Dave Butz Dies