April 15, 1997: Ken Griffey Jr. wears number 42 to honor Jackie Robinson on 50th anniversary – Society for American Baseball Research
MLB ready to celebrate Jackie Robinson Day - Jackie Robinson
Jackie Robinson Day, when MLB players can wear No. 42
Jackie Robinson Memorabilia is Focus of Upcoming Auction
MLB Celebrates Jackie Robinson's 75th Anniversary of Breaking Color Barrier
Remembering the last Dodger to wear Jackie Robinson's No. 42, Sports
The Real Story of Baseball's Integration That You Won't See in 42 - The Atlantic
Yankees want to stop issuing uniform numbers to managers, coaches because they're running out
Jackie Robinson Day
42 facts about Jackie Robinson to celebrate the 75th anniversary of his breaking the color barrier
Demilio: Roberto Clemente Day Serves as Another Reminder to Retire No. 21
Jackie Robinson Day Museum of the City of New York
Mariano Rivera Wearing Jackie Robinson's 42 to the End - The New York Times
Jersey number 42 hi-res stock photography and images - Alamy
Jackie Robinson Day - Wikipedia