New York Jets: Jets Legacy White Throwback Uniforms
49ers unveiling new alternate uniform
49ers confirm they will announce alternate 'throwback' uniforms on Wednesday - Niners Nation
Ranking the alternate uniforms of every NFL team: Rams, Ravens top impressive collection of third jerseys
The San Francisco 49ers will be wearing a black alt this season – SportsLogos.Net News
San Francisco 49ers - Wikipedia
Photo gallery of 49ers new throwback alternate uniforms for 2018 - Niners Nation
San Francisco 49ers added a new photo. - San Francisco 49ers
49ers could wear throwback alternate uniform up to three times this season