Peyton Manning reportedly may consider retirement after offseason exam on neck - Sports Illustrated
Peyton Manning's return official: Will 2015 be his, and Brock Osweiler's, last? – The Denver Post
John Elway talks Peyton Manning courtship, four-year run, retirement – The Denver Post
Peyton Manning: Epitome of a Golden Age Goes Out on Top - The New York Times
Peyton Manning takes pay cut to return to Broncos next season: report – New York Daily News
Denver Broncos - Peyton Manning retires from football after 18 NFL seasons
Broncos unveil retired numbers tribute in pregame ceremony
Armour: Peyton Manning's future: Pain and suffering
Peyton Manning to retire after 18 NFL seasons – Orange County Register
Denver Broncos to unveil retired number signage on Sunday - Mile High Report
Peyton Manning retires after 18 seasons
Peyton Manning's 'Last Rodeo' with Broncos: The interceptions. The injury. The return. The Super Bowl title. – Greeley Tribune
Peyton Manning finally makes NFL retirement official - Movie TV Tech Geeks News