San Francisco 49ers - Wikipedia
Why the San Francisco 49ers are called the 49ers
Purdy joins 49ers' Mr. Irrelevant club with a preacher, a coach, a life cut short
Who is San Francisco 49ers rookie quarterback Brock Purdy? - ESPN
San Francisco 49ers - How Sports Teams Got Their Names
Name that team: How major pro sports franchises came by their names - Los Angeles Times
What is the origin of the San Francisco 49ers team name? - Quora
San Francisco 49ers Logo and the History of the Team
San Francisco 49ers - Wikipedia