Should Peyton Manning play on for another year rather than retire?, NFL News
AFC Divisional Playoffs Playbook: Peyton Manning, Denver Broncos look to send Ray Lewis into retirement – New York Daily News
John Elway talks Peyton Manning courtship, four-year run, retirement – The Denver Post
Cardinals were among final teams Peyton Manning considered in 2012
Peyton Manning's Retirement: One Year Later
Photo: Denver Broncos quarterback Peyton Manning announces his retirement after 18 seasons in the NFL - DEN2016030705
Denver Broncos' Peyton Manning remains passionate, productive approaching 17th NFL season
QB Peyton Manning to announce retirement Monday – Orange County Register
Peyton Manning retirement speech: Full text – The Denver Post
Peyton Manning Reportedly Set to Announce Retirement, News, Scores, Highlights, Stats, and Rumors
Peyton Manning says goodbye to the NFL after 18 years — VIDEO, Football
The Denver Post has revised their Peyton Manning will retire report - Mile High Sports
Peyton Manning - Wikipedia