Rockies retire Jackie Robinson's 42 in 1997

Last player to wear No. 42 for each MLB team

Behind the Icon Mitchell & Ness Nostalgia Co.

Witnessing Jackie Robinson Day At Shea Stadium In 1997 ~ Baseball Happenings

Shortstops: The guts not to fight

Mariners honored to don Jackie Robinson No. 42

The Rockies Will Retire Larry Walker's Jersey Number - CBS Colorado

Every MLB team's retired numbers – NBC Sports Chicago

Jackie Robinson Day: MLB honors the Hall of Famer on 75th anniversary of breaking color barrier – The Denver Post

List of MLB Players Who Last Wore No. 42

The History of 42, Before 42 Made History

Jackie Robinson Day 2020 complete guide

Cards wear No. 42 on Jackie Robinson Day