Source: 49ers to introduce new alternate uniform for 2018 - Niners Nation
49ers president confirms new alternate uniforms on the way
49ers Throw It Back to the 94ers, Unveil Alternate Uniform – SportsLogos.Net News
Ranking NFL's current throwback jerseys: Eagles' perfect 'Kelly Green'; high marks for Patriots, 49ers
MMQB: 49ers and Chiefs win, setting up Super Bowl LIV matchup - Sports Illustrated
99.49ers Alternate Jersey For Sale Online - 1695363509
49ers Unveil Alternate Throwback Uniforms at Annual State of the Franchise Event
99.49ers Alternate Jersey For Sale Online - 1695363509
Do the 49ers have throwback uniforms coming in 2018?
49ers Unveil Alternate Throwback Uniforms at Annual State of the Franchise Event