Happy 59th! Or is it 58th? Cracking the mystery of Don Mattingly's birthday - ESPN
Who Was Thurman Munson and Why Isn't He in the Hall of Fame?
The Second Pass
Don Mattingly bans Marlins players from growing sweet mustaches like he had in the '80s
Design – Page 2 – SABR's Baseball Cards Research Committee
Miami Marlins' Don Mattingly called out for facial hair ban - Sports Illustrated
The Scruffy Story of Why the New York Yankees Can Never Have Facial Hair
Apple TV bringing the facts for this AL East clash tonight : r/baseball
Cardboard appreciation: 1981 Topps Traded Darrell Porter