Mariners honored to don Jackie Robinson No. 42
Mets retire Willie Mays' No. 24 as Old-Timers' Day returns
Jackie Robinson, Biography, Statistics, Number, Facts, & Legacy
Seventy-Five Years Ago, Jackie Robinson Changed History When He Took the Field in a Brooklyn Dodgers Uniform - Jugs Sports
Remembering the last Dodger to wear Jackie Robinson's No. 42, Sports
Last player to wear No. 42 for each MLB team
April 15, 1997: Ken Griffey Jr. wears number 42 to honor Jackie Robinson on 50th anniversary – Society for American Baseball Research
Who was the last player to wear No. 42 for each team?
Celebrating Jackie's 100th: 42 facts about Jackie Robinson, by Rowan Kavner
Why every MLB player is wearing No. 42 today
Why are MLB players wearing No. 42 jerseys today?
Robinson, Jackie Baseball Hall of Fame