San Francisco 49ers, American Football Wiki
NFL Should Abolish the 'One-Shell Rule : r/nfl
The Wearing Of the Green (and Gold): June 2012
Which 3 NFL teams have the best-looking uniforms? And which 3 have
Ranking NFL's current throwback jerseys: Eagles' perfect 'Kelly
Will NFL let 49ers wear 1994 throwback uniforms in Super Bowl 54
Do the 49ers have throwback uniforms coming in 2018?
49ers Introduce New Throwback Alternate