Why are MLB players wearing No. 42 jerseys today?
Jackie Robinson Tribute Is Proving Popular - The New York Times
Shop Exclusive Jackie Robinson - Jerseys, Hats, Shirts - JRM
Jackie Robinson Day adding a tribute
Jackie Robinson Day: Everyone wears '42' today – Twin Cities
Mariners at forefront of establishing Jackie Robinson Day
April 15, 1997: Ken Griffey Jr. wears number 42 to honor Jackie Robinson on 50th anniversary – Society for American Baseball Research
What more should MLB do to make real impact on Jackie Robinson Day? - Fish Stripes
Why is today Jackie Robinson Day? The reason MLB players wear 42 & more to know about baseball's annual April 15 tribute
Jackie Robinson Day 2023: MLB players wear No. 42 to honor trailblazer