Rollie Fingers' Mustache Began as a Joke, Then He Chose It Over
Rollie Fingers' mustache, then and now
Who Has the Best Facial Hair in Baseball History?
Who Has the Best Facial Hair in Baseball History?
MLB Facial Hair Hall of Fame - Men's Journal
Rollie Fingers – Society for American Baseball Research
Astros starters rock hair extensions for postseason 'dos
Rollie Fingers' mustache, then and now
Rollie Fingers and the 25 Players with the Best Facial Hair in MLB