52 days until 49ers kickoff: Who wore it best? Who wears it now? - Niners Nation
Will Boldin break the 49ers curse of No. 81? - ESPN - Fandom - ESPN Playbook- ESPN
The 101 Greatest NFL Players by Uniform Number: 40-49
San Francisco 49ers - Wikipedia
CBS Sports names Cowboys' Micah Parsons the No. 1 linebacker in NFL
The Best Player to Ever Wear Each NFL Jersey Number, News, Scores, Highlights, Stats, and Rumors
CBS Sports lists this 49ers team as the greatest in franchise history
New 49ers jersey numbers to know – East Bay Times
Several former 49ers named the best to ever wear their jersey numbers by CBS Sports
Richard Sherman to Wear No. 25 with the 49ers