The Random Ballplayer: Special: The Top Mustaches in Baseball History
Dennis Eckersley
Mustaches in Sports: Part 2 – Defense Towel
Stores – SABR's Baseball Cards Research Committee
The Unique Hall of Fame Career of Dennis Eckersley - Cooperstown Cred
Dennis Eckersley
Best Cards: Dennis Eckersley — The Kelley Black Book
1987 Topps Traded Dennis Eckersley Captured the Moment – Wax Pack Gods
Cubs Convention Insider: Top Mustaches in Cubs History