Famous Part Time Montanan Calls It Quits After Legendary Career.
Tom Brady makes history as Tampa Bay Buccaneers win first-ever
49ers' Justin Smith decides to retire – The Mercury News
Sought After Cedar Rapids Prep to Play Football at Univ. of Iowa
Sought After Cedar Rapids Prep to Play Football at Univ. of Iowa
Justin Smith: 49ers knew his retirement plans before 2015 NFL
Justin Smith retires: 49ers defensive lineman announces retirement
Pro Football Journal: Justin Smith—Recently Retired Already Forgotten?
Pro Football Journal: Justin Smith—Recently Retired Already Forgotten?
So long, 'Cowboy': 49ers' Justin Smith retires after 14 seasons