Jackie Robinson Day being celebrated across MLB
How Did Jackie Robinson Make History?
Jackie Robinson - Wikipedia
Jackie Robinson – Society for American Baseball Research
Pirates to wear No. 21 on Sept. 9 to honor Roberto Clemente
Michael Grove pitches well for Dodgers on Jackie Robinson Day
Jackie Robinson's Signing Caused a Financial Dispute - The New York Times
76 Years Ago, Jackie Robinson Broke the MLB Color Barrier with the Dodgers
How Did Jackie Robinson Make History?
Jackie Robinson's Signing Caused a Financial Dispute - The New York Times
MLB Celebrates 75th Anniversary Of Jackie Robinson Breaking Color Barrier