NFL to allow teams to use alternate-color helmets starting in '22
Should the 49ers Have Alternate Helmets? - Sports Illustrated San
49ers news: Where are the 49ers alternate helmets? - Niners Nation
Poll: Which alternate helmet should the 49ers choose? - Niners Nation
49ers considering a red helmet worn in 1955 as a second helmet for
2021 NFL midseason report - What we've learned, questions and
49ers considering alternate throwback helmet for 2022 season : r/49ers
Denver Broncos: Russell Wilson's progress through camp have him
Does Ohio State Want Michigan to Be Good? - WSJ