Crunching the Numbers: College Basketball Players Can't Wear 6, 7, 8 or 9 - The New York Times
NBA unveils No. 6 patch to honor Bill Russell across league - Los Angeles Times
NBA retires Russell's No. 6 jersey permanently leaguewide
LeBron James officially changes jersey number to No. 6
10 Best NBA Players Who Have Worn The No. 23: Michael Jordan And LeBron James Made History Wearing That Jersey - Fadeaway World
Bill Russell's No. 6 Joins Rare Class of Retired Jersey Numbers - The New York Times
NBA 24/7 - Best players in NBA History by jersey numbers
NBA to retire Bill Russell's No. 6 jersey across league ahead of 2022-23 season