San Francisco 49ers - Wikipedia
NFL jersey number rule change could bring back some classic
49ers CB Deommodore Lenoir makes the jersey switch to #2 official
2 49ers change jersey numbers
What the Story Behind Jersey #97? Unveiling 49er Defensive Prodigy
49ers' Charvarius Ward takes up Colin Kaepernick's No. 7 jersey
NFL picks: Best player prop bets for 49ers-Giants on Thursday
NFL jersey number changes: Why Dalvin Cook, Derwin James and other
A numbers game: 2 officials change uniform numbers – Football Zebras
Heritage Uniforms and Jerseys and Stadiums - NFL, MLB, NHL, NBA