Bill Russell's No. 6 is being retired across the NBA : NPR
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NBA Retires Bill Russell's No. 6 Jersey Across League
Bill Russell's No. 6 Jersey First Ever To Be Retired Across Entire NBA
Bill Russell, Celtics legend and civil rights icon, dies at 88
NBA to Retire Bill Russell's No. 6 Jersey Number Across the League - Sports Illustrated
Bob Cousy, 90, Still Rues The Assists He Didn't Make To Bill Russell : NPR
Bill Russell - Wikipedia
Bill Russell's No. 6 Being Retired Across NBA
Celtics praise LeBron following his climb to top spot in NBA's all-time scoring list
Bill Russell, Celtics legend and civil rights icon, dies at 88