Former 49ers coach Bill Walsh dead at 75 – Chico Enterprise-Record
The 49ers can thank Paul Brown to some extent for Bill Walsh - Niners Nation
The Top of His Game - Sports Illustrated Vault
Bill Walsh: The Godfather of the Modern NFL Offense
The Genius: How Bill Walsh Reinvented Football and Created an NFL Dynasty eBook : Harris, David: Kindle Store
Walsh's innovations still prevalent – Orange County Register
Bill walsh coach hi-res stock photography and images - Alamy
Honoring Bill Walsh Coach of the San Francisco 49ers & First
List of San Francisco 49ers head coaches - Wikipedia