Robinson's jersey number shows up in baseball's statistical history, too

Total Baseball: The Ultimate Baseball Encyclopedia: Birnbaum, Philip, Deane, Bill, Neyer, Rob, Schwarz, Alan, Dewey, Donald, Acocella, Nicholas, Wayner, Peter, Thorn, John: 9781894963275: : Books

Wrigley Field historical sleuthing: Nat King Cole and Jackie Robinson - Bleed Cubbie Blue

Jackie Robinson Day: 4 Facts About His Jersey No. 42, Now Retired in MLB

Every uniform number ever, ranked by value

In honor of Jackie Robinson Day, the social significance of jersey numbers in sports – New York Daily News

Behind the numbers -- Stories of how MLB players picked their uniform - ESPN

Jackie Robinson Legacy Beyond Baseball

Robinson Cano's Second Failed Drug Test Discredits His Career - The New York Times

As baseball celebrates Jackie Robinson, those around the game recognize 'it's time for some progress

In honor of Jackie Robinson Day, the social significance of jersey numbers in sports – New York Daily News