NFL to allow teams to use alternate-color helmets starting in '22
49ers considering alternate red helmet for future seasons, per
Broncos' new Snowcapped helmets a nod to storied past
49ers could have new alternate uniforms, per report
Vote for West Valley Rams in High School Football Helmet Tourney
1994 San Francisco 49ers season - Wikipedia
NFL Passes New Helmet Rule, Now What? : r/49ers
Joe Staley talks Super Bowl loss, Joe Montana and Steve Young's
Totally cool two-tone helmets for every NFL team
Poll: Do you like the 49ers' alternative uniforms?