49ers' Willis in wrist cast, misses practice
Five things to know as the Jim Harbaugh 49ers era finally ends
49ers hit hard after unexpected offseason departures - The Boston Globe
Jim Harbaugh leaving San Francisco 49ers early
Patrick Willis, ex-teammates praise Joe Staley upon 49ers retirement – Daily Democrat
Tim Kawakami: When Jim Harbaugh discusses Patrick Willis, a certain Say Hey Kid comes to mind – The Mercury News
Press Pass: 49ers LB Patrick Willis Talks About the Offense and Defense - Niners Nation
National championship hopes for Michigan football land on broad shoulders of J.J. McCarthy
49ers in flux as Patrick Willis, Justin Smith retire - Sports Illustrated
Super Bowl: 49ers' Willis does it his way – Orange County Register