From 00 to 99, Denver's all-time best pro athletes by jersey number - The Athletic
On Peyton Manning, Broncos quarterback
Peyton Manning Will Wear No. 18 In Denver, Though It Was Retired In Honor Of Frank Tripucka. What's The Big Deal About Numbers?
The Broncos unretired the No. 18 jersey for Peyton Manning. Its original wearer was an assistant coach who, after injuries and poor play, stepped in as QB and became the first one
What's in a Number? Why Peyton Manning Shouldn't Wear #18 - Mile High Report
Paige: Broncos can honor No. 18, Frank Tripucka, with a victory – The Denver Post
Looking over the career achievements of Peyton Manning
You Will Never Guess Colorado's Favorite Sports Movie
Tripucka had just one request for Manning to wear No. 18 - a Super Bowl win - Mile High Report
Broncos unveil retired numbers tribute in pregame ceremony
The story behind Floyd Little's retired No. 44
Star quarterback Peyton Manning signs with Denver Broncos for reported five-year deal