Plain and simple, he had the best-known name, face, and sideburns of 1980s baseball and baseball cards.

Base card #300

https://marketplace.beckett.com/item/1082/1988-topps-300-don-mattingly_53873452

Record Breakers #2

https://marketplace.beckett.com/cardgallery_900/item/1988-topps-2-don-mattingly-rb_62538603

All Star #386 on eBay

https://www.ebay.com/itm/225908282343

World of Baseball Don Mattingly - https://baseballcards.substack.com/p/1988-topps-world-of-baseball-don 

SABR Bio by James Lincoln Ray - https://sabr.org/bioproj/person/Don-Mattingly/

Don’s HOF Case at MLB https://www.mlb.com/news/don-mattingly-hall-of-fame-case

Don’s 1987 Topps Birthday Mystery - https://www.espn.com/mlb/story/_/id/29043681/cracking-birthday-mystery-don-mattingly-1987-topps-baseball-card 

Don talks about the Hit Man poster - https://youtu.be/1iRtD14A9Io?si=dMwC5kZb8426ZaCu   

Don and Niekro in a New Coke Ad - https://youtu.be/OxjZfs3OUmM?si=4jnF0NzCM_l7QTHq 

1989 SI Article - https://vault.si.com/vault/1989/02/06/the-hit-man-hits-back-after-his-most-trying-year-as-a-yankee-don-mattingly-is-now-back-home-in-indiana-preparing-to-attack-the-upcoming-season 

1995 ALDS Home Run - https://youtu.be/LrAU5Kxnr04?si=6MzcQxKMzuh-7McZ