Peyton Manning breaks NFL record as he throws 510th career touchdown passes
Peyton Manning Is Now The NFL's All-Time Leader In Touchdown Passes
Manning throws 509th TD as Broncos top 49ers
Peyton Manning - Wikipedia
Peyton Manning retires: Timeline of QB's record-setting NFL career
What to Know about San Francisco 49ers 2015 Preseason Schedule
What to Know about San Francisco 49ers 2015 Preseason Schedule
Peyton Manning breaks Brett Favre's touchdown pass record in Broncos' 42-17 win over 49ers – New York Daily News
Photo gallery: Manning breaks Favre's TD record, beat 49ers 42-17
A timeline of Peyton Manning's 18-season NFL career
Manning sets career record for TD passes in 42-17 win over 49ers, Archives
49ers 17-42 Broncos (Oct 19, 2014) Game Recap - ESPN