Ken Griffey Jr. had Jackie Robinson Day idea
Last player to wear No. 42 for each MLB team
Jackie Robinson Day Something That Baseball Does Right Every Year
April 15, 1997: Ken Griffey Jr. wears number 42 to honor Jackie
MLB to Celebrate Jackie Robinson Day Today – NBC Los Angeles
Uniform number (Major League Baseball) - Wikipedia
MLB Network - Wearing the number 42 was a tremendous honor
A very special Jackie Robinson Day to celebrate the 75th
Jackie Robinson Day 2020, All Players Wearing #42 and Patches
The only day MLB players can wear No. 42? Jackie Robinson Day
Last player to wear No. 42 for each MLB team
Angels and Mariners lock arms in show of support on Jackie