Denver Broncos' Peyton Manning remains passionate, productive approaching 17th NFL season
Peyton Manning Retiring Isn't a Big Deal for NFL
After 18 seasons, Peyton Manning to retire
Peyton Manning to announce retirement Monday - ABC11 Raleigh-Durham
Peyton Manning breaks NFL career TD passes record
Peyton Manning - Wikipedia
Denver Broncos: Peyton Manning won't retire after 2015 season - Sports Illustrated
Peyton Manning gives away little on NFL future at Super Bowl Media Day, NFL News
NFL notes: Broncos, Peyton Manning working to revise contract - The Boston Globe
Peyton Manning retires after 18 seasons
God Bless Football': Peyton Manning Officially Announces Retirement
Peyton Manning to retire after 18 NFL seasons – Orange County Register