List of NCAA men's basketball retired numbers - Wikipedia
List of Major League Baseball retired numbers - Wikipedia
San Francisco 49ers - Wikipedia
List of National Football League retired numbers - Wikipedia
San Francisco 49ers - Wikipedia
Arizona Cardinals Team History and Timeline - Sports Illustrated
List of National Football League retired numbers - Wikipedia
San Francisco 49ers - Wikipedia
Arizona Cardinals Team History and Timeline - Sports Illustrated
List of San Francisco 49ers starting quarterbacks - Wikiwand
List of National Basketball Association retired numbers - Wikipedia
Joe Montana, American Football Wiki
Retired Numbers per NFL Team : r/nfl
San Francisco 49ers - Wikipedia