The Scruffy Story of Why the New York Yankees Can Never Have Facial Hair
New York Yankees players grow mustaches during hot streak - Sports Illustrated
Who has a mustache on the Yankees? Why Matt Carpenter's facial hair doesn't violate team rules
Faster Than A Shark: Yankee Mustaches: A Growing Problem.
BASEBALL;The Hair Goes, and So Does Offense, for Slumping Yanks - The New York Times
Yankees great Don Mattingly has free agency advice for Aaron Judge
7 Yankees who looked weird without facial hair
Who has a mustache on the Yankees? Why Matt Carpenter's facial hair doesn't violate team rules
The Life And Career Of Don Mattingly (Story)