Hall of Fame QB Y.A. Tittle dead at 90
Y.A. Tittle, ex-49ers quarterback and NFL Hall of Famer, dies at 90 – East Bay Times
Today in Pro Football History: 1963: Giants Dominate Browns in Key Eastern Showdown
The NFL: 100 Years of football - Los Angeles Times
1963 Chicago Bears -- Chicago Tribune
Cal Hubbard best of Packers' interior defensive linemen
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Former 49ers quarterback Y.A. Tittle dies at 90
Y.A. Tittle, Pro Football Hall of Famer, dies at age 90 - ESPN