Facts about Jackie Robinson, The Learning Key
Mariano Rivera Wearing Jackie Robinson's 42 to the End - The New York Times
The History of 42, Before 42 Made History
The Real Story of Baseball's Integration That You Won't See in 42 - The Atlantic
The Greatest MLB Showdown Project: Happy Jackie Robinson Day
Jackie Robinson Day: 4 Facts About His Jersey No. 42, Now Retired in MLB
MLB ready to celebrate Jackie Robinson Day - Jackie Robinson
42 Facts About Jackie Robinson
Jackie Robinson Day Museum of the City of New York
D-backs' next retired number prediction
Jackie Robinson Day - Wikipedia
Mariners honored to don Jackie Robinson No. 42