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 greatest Denver Broncos of all time: Part 1 – Welcome to Daly Dose Sports- Your dose of sports and sarcasm.
Peyton Manning going into Denver Broncos Ring of Fame – The Durango Herald
Frank Tripucka, first Denver Broncos QB, dies at 85 years old
Ranking All Denver Broncos Quarterbacks in Franchise History
Denver Broncos should unretire No. 18 and give it to Peyton Manning, says Frank Tripucka, former owner of number – New York Daily News
Peyton Manning, Broncos honor Demaryius Thomas with pregame tribute
Peyton Manning - Wikipedia
Teams shouldn't retire jerseys if they don't intend to keep them retired - NBC Sports