While Jackie Robinson's breakthrough in 1947 opened the gates of opportunity for African Americans and other minority players, it was not until 1971 when a team first enjoyed a full and complete level of integration, with half of its twenty-five-man roster comprised of players of African American and Latino descent. That team was the Pittsburgh Pirates, managed by an old-time Irishman.
The Team that Changed Baseball: Roberto Clemente and the 1971 Pittsburgh Pirates [Book]
September 1, 1971: Pirates field first all-Black lineup in baseball history – Society for American Baseball Research
Pittsburgh Pirates - Game Used Only
Dock Ellis Game Used Jersey 1971 Pittsburgh Pirates - Game Used Only
The day the Pirates fielded the first all-Black and Latino lineup
Fifty Years After Pitching A No-Hitter, Dock Ellis' Legacy Continues In Baseball
Dock Ellis' journey helped him shine a light for others
Pirates had MLB's first all-minority lineup
Dock Ellis Jersey - 1970's Pittsburgh Pirates Cooperstown Home Baseball Throwback Jersey
Dock Ellis Game Used Jersey 1971 Pittsburgh Pirates - Game Used Only
Dock Ellis' journey helped him shine a light for others
The day the Pirates fielded the first all-Black and Latino lineup
Simulation: Orioles get revenge on Pirates after 49 years – The Vacaville Reporter