Photos: The 49ers have alternate uniforms for the first time ever - Footballscoop
49ers Unveil Alternate Throwback Uniforms at Annual State of the Franchise Event
Photos: The 49ers have alternate uniforms for the first time ever - Footballscoop
Source: 49ers to introduce new alternate uniform for 2018 - Niners Nation
49ers to wear all-white throwbacks vs. Seahawks, per report
49ers confirm they will announce alternate 'throwback' uniforms on Wednesday - Niners Nation
49ers Throwback Uniform — UNISWAG
Throwback Thursday: Packers showcase alternate uniforms
The San Francisco 49ers will be wearing a black alt this season – SportsLogos.Net News
Packers 2021 alternate jerseys made for some great photos - Packernet's View
The top 10 uniforms in Bay Area professional sports - The Athletic
49ers Throwback Inspired Alternate Uniforms