Celtics pay tribute to the late Bill Russell prior to season opener against 76ers - The Boston Globe
Celtics legend Bill Russell to auction off prized memorabilia later this year
Legends profile: Bill Russell
NBA Permanently Retires No. 6 To Honor Bill Russell
NBA to retire Celtics legend Bill Russell's No. 6 leaguewide - Los Angeles Times
Bill Russell's No. 6 Jersey First Ever To Be Retired Across Entire NBA
Heat's plan for LeBron James' No. 6 after NBA retires Bill Russell's No. 6
Why was Boston Garden nearly empty when Bill Russell's number was retired in 1972?
Boston Celtics legend Bill Russell honoured as number six jersey retired by all NBA teams - Mirror Online
The Number 6 of Bill Russell will be Retired across the entire National Basketball Association - Articles - Wizard of Vegas